Menu Syntax in Customized Menu or Toolbar

I can get the command created and the toolbar made successfully for simple commands that do not require input.  However, I am having difficulty with commands that require input.

For instance, in OtherCAD the command line in the menu:

^C^C-DIMSTYLE R STD_XXX

will start the dimstyle command accept the restore option and accept the "STD_XXX" style and make it current.

 

I can get the command to initiate and accept the restore option but not the named dimension style. with the line:

^C^C^C-DimensionStyle;R;STD_XXX

 

Does anyone have any insight into how to correctly achieve this.  I have been unable to find any reference in the customization guide or user guides

 

Thanks,

James