HardwareTimer cannot accept global variables

[rsc9421]

Hi, i was trying this example:
https://github.com/stm32duino/STM32Examples/blob/main/examples/Peripherals/HardwareTimer/Timebase_callback_with_parameter/Timebase_callback_with_parameter.ino
but I can't give 2 arguments to the function instead of one, so I decided to use global variables but doesn't work
how can I fix it?

[ABOSTM]

HI @rsc9421,
Firstly, use of global variables should work,
So can you please provide the sketch you used ?
And can you please details what you mean by "doesn't work"?

Secondly, an alternative is to use a single parameter, which is a pointeur, and it can be a pointer to a data structure, containing all the data you wanted.

[fpistm]

Mainly, is your global variable is declared as volatile?