To create easily modified constants within your Stateflow® chart, use parameters that have been defined in the MATLAB workspace or inherited from a Simulink® block parameter. When you use a masked subsystem with your Stateflow chart, you can change parameters before simulation.
Share Parameters with Simulink and the MATLAB Workspace
Define parameters to share constant data with Simulink models and the MATLAB base workspace.
Define the data that a chart stores internally in its own workspace.
Resolve Undefined Symbols in Your Chart
Detect and add undefined data, events, and messages.
Specify data properties by using the Property Inspector or the Model Explorer.
Create a Mask to Share Parameters with Simulink
Mask a Stateflow chart to customize appearance and initialize parameters.