Open the example model vdp.

open_system('vdp')

Create a Simulink.ModelWorkspace object that represents the model workspace of vdp.

mdlWks = get_param('vdp','ModelWorkspace');

Create some variables in the model workspace.

assignin(mdlWks,'myVar',5.12)
assignin(mdlWks,'myOtherVar',7.22)

Display a list of the variables in the model workspace.

whos(mdlWks)

  Name            Size            Bytes  Class     Attributes

  myOtherVar      1x1                 8  double              
  myVar           1x1                 8  double