Trouble with SectionStack expandSection

[sedmands]

I have a sectionstack section that I want to expand programatically. It works fine when I use the SectionStack.expandSection(int). For the sake of readability, I would like to use the string version, however when I use this version using the section name, I am not getting the behavior I am looking for.

Here is my code.
final instSection = new SectionStackSection();//the section I am trying to expand

formStack.expandSection(0); //this works
formStack.expandSection("instSection"); //this does not work

Perhaps I am not understanding what the "SectionId" refers to.

Any help would be appreciated.

[svjard]

Are you using the name or the ID of the section? There is a difference. SectionID parameter is just that, the ID.