How can we Systematically pause Simulink model and update the variable and continue model from Matlab command line

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Hi Guys,

I have few querys , how can we update the variable during simulaton time. Here I have created simple model. Parameters "CtrlDwnValue" and "CtrlLftValue" are loaded into Matlab Wokspace. In this model, "CtrlDwnValue" is tunable parameter during runtime.

For Ex,

"CtrlDwnValue" is .29 upto T is 0.25 sec. which is represented in Fig-1., When T is 0.26 "CtrlDwnValue" is 0.35 which is represented in Fig-2.

Here I did manually paused the simulationa and changed this "CtrlDwnValue" parameter.

I wrote scipt to do above exampe, but i couldn;t able to succeed. Can any one help me how to do it?

Thanks in Advance !!!

Fig-1

Fig-2