How to use a global variable which has a structure format in simulink stateflow for the c code generation?

Hi,

I am trying to use similink stateflow and generate c code out of it ultimately. I would like to change a global variable within the stateflow. The issue is that this global variable is in a structure format. For example let's say i would like to change the value for PWM.Duty = 10. where PWM is the structure and Duty is a member within that structure. How can I achieve this? is there a way to give a customized name within a stateflow which has a sturcuture format when the code is generated? otherwise I will need to modify the names after the code is generated which is a big task.

Thanks,

Kamyar