How to make simcoupler work

??? Undefined function or method ‘SimCoupler’ for input arguments of type ‘double’.

Error in ==> PSimDialog>BrowseBtn_Callback at 221
SimCoupler(100, PSimParameters(handles));

Error in ==> gui_mainfcn at 96
feval(varargin{:});

Error in ==> PSimDialog at 42
gui_mainfcn(gui_State, varargin{:});

Error in ==>
@(hObject,eventdata)PSimDialog(‘BrowseBtn_Callback’,hObject,eventdata,guidata(hObject))

??? Error while evaluating uicontrol Callback

what version and bit type of PSIM and simulink are you using?

PSIM is 9.0 and MATLAB is R2011a