How to verifiable data type of edit field's variable?

[casper]

Hi,

I'm using draw edit field with double variable on my ea. When user modified field area how can I check this valid number or data type.
So, see like this:

Edit Field variable is = double varLot: 2.10
User write Edit field area = abcd or 5,10 (using comma not point)

How can I check edit field variable double or not? I tried MathIsValidNumber() function, but I can't do it.

Thanks.

[miro1360]

try this:
https://fxdreema.com/shared/rW0qyPdQb

this example returns 0 ... but you can edit it in many ways, ... lets say user enters wrong value, the previous value can be returned, and so on ...

[casper]

Hi Miro,

I tried to make this for a week. You are great coder.

Thank you very very very much...