Generate test cases from Stateflow don't cover min/max value of inputs

Hello everone,

In Matlab/Simulink, I drag a block "Sateflow" into Simulink. And then, I draw the flow of state from code C in Stateflow.After that, I generate this Stateflow to get all of inputs test cases, those test cases is contained in Signal Builder. Problem to me is that inputs value does not cover all inputs value such as Min/Max. Although, coverage report file still is 100%. It mean that all test case covered all inputs. Now, i would like to generate test cases that input values of variable can be boundary value (Min/Max, if you have any experience about this, could you teach me? http://upanh.com/view/?s=upload&id=dva1ag5e6kd http://upanh.com/view/?s=upload&id=8vad1gceckr http://upanh.com/view/?s=upload&id=4va4bg3regi Please see image in above link

Thank you very much