enable / disable button object on pyVCP?

Hi
Google is not my friend in this case :/
Is it possible to disable custom button in pyVCP? I'd like to add button to release the hydraulic tool holder (it works) but 'd like to disable it when the spindle is on. Can I  do this somehow? (I know I can do it on the HAL side by using simple logic to not activate the particular gpio output if spindle-enable signal is active but I'd prefer to disable the button on the gui as well).
Thank you for your advice.
 

In the .xml file for the button, to activate disable pin, insert to button


In postgui.hal

change MYBUTTON to button's halpin

While spindle is on (M3 and S > 0), button is greyed out.

 

In addition to disabling your button, you might also want to more explicitly disable the output signal to the tool release in hal using some hal logic.

Thank you, this works!