Hi Cédric DEPOILLY,
I understand you want to increment a variable in a block when ever the button is pushed.
Unfortunately, the "Push Button" block changes variables into a constant scalar and does not accept variable changes in response to clicks. Instead, you could use the "Callback Button" block. The Callback Button block executes MATLAB code in response to a click or press of the button. You can update the block parameters to suit your needs and use this block to increment the variable whenever it is clicked.
To know more about the "CallBack Button" customisation you could refer to the below MATLAB's documentation.
