On my MTP2200 Unified Comfort panel I'm trying to change a button's background color on my unified project if any bit from 1 to 57 of an Array[0..63] of Bool is true or false. Bits: 0, 58,59,60,61,62 and 63 are true.

I have created a button and on its background color script I have tried the following: 

let anyTrue = false;
for (let i = 1; i <= 57; i++) {
if (HmiRuntime.Tags["H7_AlarmeModul0_W0(1)"][i]) {
anyTrue = true;
break;
}
}
if (anyTrue)
return Screen.FindItem("Template_Button_23").BackColor = HMIRuntime.Math.RGB(255,0,0);
else
return Screen.FindItem("Template_Button_23").BackColor = HMIRuntime.Math.RGB(80,80,80);

 I also have tried to change buttons color depending on tag H7_AlarmeModul0(1) value. If all bits from 1 to 57 are false, tag's value is 72057594037928188. So if the value is changing, button's color should be red. But still doesn't work. Hoe could I make it work?
Attached are my DB structure and hmi tags I have created.

don't forget to read the Value. I would guess that a script like:

if(HMIRuntime.Tags("H7_AlarmeModul10_W0["+i+"]").Read()){ … } would work.

Your Brackets don't work like that. And your returns are strange aswell. You want to return a color. You do not want to return the result of setting a property. 
Just do return HMIRuntime.Math.RGB(255,0,0);

Thanks for replying! I have changed as you suggested, but my button still doesn't color red is I change to true any of bit from 1 to 57.