How to make a variable equal to Random.Range Result

Hello, I have been trying to solve an issue, probably so simple that it occurs because of my lack of JavaScript knowledge which I am trying to improve.

My aim is to create a function for attacking, including different weapons and damages by Random.Range values. Since I am planning to make this system dynamic, I want to pull data from current players weapon I defined above into "var currentWeapon", so random damage range will be displayed in it. To try this, I used temporary variables but I couldn't compile it.

 function attack() {
 daggerRoll            = Random.Range(1,5);
 clubRoll            = Random.Range(1,7);
 
 shortswordRoll        = Random.Range(1,7);
 longswordRoll        = Random.Range(1,9);
 greatswordRoll        = Random.Range(1,13);
 heavymaceRoll        = Random.Range(1,9);
 handaxeRoll            = Random.Range(1,7);
 greataxeRoll        = Random.Range(1,13);
 
 slingRoll            = Random.Range(1,7);
 shortbowRoll        = Random.Range(1,7);
 longbowRoll            = Random.Range(1,9);
 handcrossbowRoll    = Random.Range(1,7);
 heavycrossbowRoll    = Random.Range(1,9);
 
     var charDEXMod    : float = 3;  //TEMP
     var charSTRMod     : float = 5;  //TEMP
     var charBonus     : float = 0;  //TEMP
     var currentWeapon = daggerRoll; //TEMP
 
 
     if (charDEXMod > charSTRMod) {
         charStatMod = charDEXMod;
     }
     else {
         charStatMod = charSTRMod;
     }
 
     attackDamage = currentWeaponRoll + charStatMod + charBonus;
     Debug.Log("Attack Damage: " + currentWeaponRoll +"+"+ charStatMod +"+"+ charBonus);
 }
 

I also tried using it in a more static way like:

     var dagger : float;
     var club : float;
         if (currentWeapon == dagger) {
             currentWeaponRoll = Random.Range(1,5);
         }
         else if (currentWeapon == club) {
             currentWeaponRoll = Random.Range(1,7);
         }

but it only worked for the "if" statement above....

How can I solve this?

Thanks so much for your time!

FYI: charDEXMod > charSTRMod is to find if player/enemy is ranged or melee