Is tit possible to connect a push button to source?

I'm creating a model in Matlab Simulink that uses a Bernoulli binary source that generates a random vector. For now, this source generates a vector every time period, so the sample time is set to 1. But how can I link the sample time to an extern parameter, so this source can e.g. be triggered to generate a vector at non predefined moments? Actually I want to generate a vector every time I click the push button.

Answer 1

[goerk]

You can use a Constant-Block (name it myRandInput) and change the value of this block over the OpenFcn (open function callback) of an empty Subsystem. (Right-Click on the Subsystem -> Properties -> Callbacks)

Or you can use an annotation ClickFcn. (Double-Click into the model -> Name the annotation: e.g. ClickHere -> Click outside the annotation -> Right Click on the annotation -> Properties -> ClickFcn)

In this functions you can create a random number and write it to the Constant value.

 myValue=rand;
 modelName = gcs;
 set_param([modelName '/myRandInput'],'Value', num2str(myValue));

Note: The Constant-Block is named: myRandInput