Values jumps from positive to negative and they reaches 0
It's my first post on this forum so I'm sorry if I put it in wrong place.
I've just started playing with Clickteam and I have a problem. I made a button with incrises one value 1000 times. After about 4 clicks it shows strange random value. I keep clicking and value jumps from positive to negative and it reaches 0. I don't know why. I have second "counter" (it's text, which shows alterable value of 1 object. First one is the same) with the same button to multiply it by 1000 and this counter works. That first one shows very big numbers. Second one shows them in scientific notation and there is no problem to click it 20 times and value is still ok. (I know my english and description of my problem aren't perfect)
What should I do?