How to add an int from firebase to a fixed number in thunkable

Hello! I am making an app which involves adding points to a given user, however, his is not for me as everytime I push a value to firebase, it converts it to a string, if anyone knows the solution, please share!
Thank you for reading!

I have the problem all of the time. Adding zero to the variable (or the control text or whatever) causes firebase to save as a number instead of a string Something like

i think you want to label22.text and 0
for example label22.text=abc
and you want to adding zero so abc0

if you want to this, you should use join