Make increment but shows error?

[Mona]

hi, I try to make increment a value on a button click, but it shows erron

for increment code only two of the photo. when I removie they then no erron, so i don't know anything wrong??? tks

[TIMAI2]

Your textbox cannot be empty. Set it to 0 in the designer/ or with a block in Screen1.initialise

Also ensure the content of your textbox is a number, perhaps use numbers only from the designer.

[Mona]

Thank you

[Mona]

Continuing the discussion from Make increment but shows erron?:

hi when i download apk. stil got problem evem I already set up the tex is 0 .

[Mona]

[TIMAI2]

Perhaps this:

set valueIfTagNotThere to a number 0

[Mona]

Hi ,thank you for reply, I found need remove old app, otherwise new app some part can't update. So all good tks😊