Hi Simone Bergadano,
I see you have created a block that receives a flow of packets and saves the packets to MATLAB workspace using the "ToWorkspace" block. I get that you want to reuse this block throughout your model to be able to record multiple flows of packets, save them to the workspace and want to easily change the output variable name of the "ToWorkspace" block within your custom block preferably by using a mask dialog variable.
You can use the 'Mask Initialization and Callback code' to achieve your desired behaviour. You can modify the initialization code to change the "VariableName" parameter of the "ToWorkspace" block to the value provided in the mask dialog box. You can use the "set_param" function to achieve this. This initialization code is executed everytime the mask parameters are changed.
Refer to the following documentation to know more about the "Mask Initialization and Callback code":
To know how to use "set_param" function to change block parameters, refer to the following documentation:
Hope this Helps!
