how can i change text value of a canvas Text in runtime?

im trying to change the value of my Text object while the game is running so text.text = 5.toString()

at the moment i have this code and every time i click on a object it will open the UI but it does not update the numbers when i debug.log the values i do get numbers greater than 0 in the amount array

for(int i = 0; i<_texts.Length; i++) { if (amount.Length == i) break; _texts[i].text = amount[i].ToString(); }