Need help with c#

How to make this shorter.I m a beginner so i dont know much yet but i think i might an array but i dont know how to set it up. Here is the code

void HpUpgradelvl()

 {
     if (PlayerControl.coins >= 30)
     {
         healthPoints = healthPoints + 10;
         PlayerPrefs.SetFloat("HealthUP", healthPoints);
         if (PlayerControl.coins >= 60)
         {
             txt.SetActive(false);
             txt1.SetActive(true);
             txt2_0.SetActive(false);
             txt2_1.SetActive(true);
             healthPoints = healthPoints + 10;
             PlayerPrefs.SetFloat("HealthUP", healthPoints);
             if (PlayerControl.coins >= 100)
             {
                 txt1.SetActive(false);
                 txt2.SetActive(true);
                 txt2_1.SetActive(false);
                 txt2_2.SetActive(true);
                 healthPoints = healthPoints + 10;
                 PlayerPrefs.SetFloat("HealthUP", healthPoints);
                 if (PlayerControl.coins >= 150)
                 {
                     txt2.SetActive(false);
                     txt3.SetActive(true);
                     txt2_2.SetActive(false);
                     txt2_3.SetActive(true);
                     healthPoints = healthPoints + 10;
                     PlayerPrefs.SetFloat("HealthUP", healthPoints);
                     if (PlayerControl.coins >= 210)
                     {
                         txt3.SetActive(false);
                         txt4.SetActive(true);
                         txt2_3.SetActive(false);
                         txt2_4.SetActive(true);
                         healthPoints = healthPoints + 10;
                         PlayerPrefs.SetFloat("HealthUP", healthPoints);
                         if (PlayerControl.coins >= 280)
                         {
                             txt4.SetActive(false);
                             txt5.SetActive(true);
                             txt2_4.SetActive(false);
                             txt2_5.SetActive(true);
                             healthPoints = healthPoints + 10;
                             PlayerPrefs.SetFloat("HealthUP", healthPoints);
                             if (PlayerControl.coins >= 360)
                             {
                                 txt5.SetActive(false);
                                 txt6.SetActive(true);
                                 txt2_5.SetActive(false);
                                 txt2_6.SetActive(true);
                                 healthPoints = healthPoints + 10;
                                 PlayerPrefs.SetFloat("HealthUP", healthPoints);
                                 if (PlayerControl.coins >= 450)
                                 {
                                     txt6.SetActive(false);
                                     txt7.SetActive(true);
                                     txt2_6.SetActive(false);
                                     txt2_7.SetActive(true);
                                     healthPoints = healthPoints + 10;
                                     PlayerPrefs.SetFloat("HealthUP", healthPoints);
                                     if (PlayerControl.coins >= 500)
                                     {
                                         txt7.SetActive(false);
                                         txt8.SetActive(true);
                                         txt2_7.SetActive(false);
                                         txt2_8.SetActive(true);
                                         healthPoints = healthPoints + 10;
                                         PlayerPrefs.SetFloat("HealthUP", healthPoints);
                                         if (PlayerControl.coins >= 610)
                                         {
                                             txt8.SetActive(false);
                                             txt9.SetActive(true);
                                             txt2_8.SetActive(false);
                                             txt2_9.SetActive(true);
                                             healthPoints = healthPoints + 10;
                                             PlayerPrefs.SetFloat("HealthUP", healthPoints);
                                             if (PlayerControl.coins >= 730)
                                             {
                                                 txt9.SetActive(false);
                                                 txt10.SetActive(true);
                                                 txt2_9.SetActive(false);
                                                 txt2_10.SetActive(true);
                                                 healthPoints = healthPoints + 10;
                                                 PlayerPrefs.SetFloat("HealthUP", healthPoints);
                                                 if (PlayerControl.coins >= 860)
                                                 {
                                                     txt10.SetActive(false);
                                                     txt11.SetActive(true);
                                                     txt2_10.SetActive(false);
                                                     txt2_11.SetActive(true);
                                                     healthPoints = healthPoints + 10;
                                                     PlayerPrefs.SetFloat("HealthUP", healthPoints);
                                                     if (PlayerControl.coins >= 1000)
                                                     {
                                                         txt11.SetActive(false);
                                                         txtmax.SetActive(true);
                                                         imgmax.SetActive(false);
                                                         txt2_11.SetActive(false);
                                                         txtmax2.SetActive(true);
                                                         imgmax2.SetActive(false);
                                                         healthPoints = healthPoints + 10;
                                                         PlayerPrefs.SetFloat("HealthUP", healthPoints);
                                                     }
                                                 }
                                             }

                                         }
                                     }
                                 }
                             }
                         }
                     }
                 }
             }
         }
     }
     else healthPoints = 100;
 }