Simscape language parameter type definition

I am currently designing customized Simscape components and I have had some trouble trying to find a way to define the type of parameter to appear in the component mask (writing it in the components' ssc files), such as: edit (default), checkbox, pop up (on/off or true/false I have seen as feasible)... In particular I am interested in the checkbox type.

I have read through the Simscape Language guide and I have not found any reference to define such type. If someone could help me with this issue I would very much appreciate it. Thanks in advance.