How do I Add a Decimal Point to a Number

I have a number variable called NumValue. I want to add a decimal point to the end of the number. I've tried the following:

Add "." to NumValue

Set NumValue to NumValue & "." (BTW, this works for numbers)

Set NumValue to NumValue + "."

None of these worked. Any help would be greatly appreciated.

You can't add a decimal point to a "number" type. What are you actually wanting to achieve?

I working on a calculator so I need to be able to add a decimal point to the current displayed number.

I think you d be better off having a string representing the number, then translate it to a number when the calcul is needed.