What field to check in my StartMenuLeave function?

[Lilla]

MUI 1.65, I updated via CVS this morning. Win98SE here.

I am using the logic of the StartMenu.nsi and I build on that.
My StartMenuLeave function is shown below.

My problem is that I don't know where to find the folder name entered (or selected) by the user. MUI_STARTMENUPAGE_VARIABLE contains the previous value entered (or selected) by the user.

This is my first Leave function, and I cannot find the answer.

; validate the Start Menu folder entered (or selected) by the user
Function StartMenuLeave
MessageBox MB_OK "at1 MUI_STARTMENUPAGE_VARIABLE = ${MUI_STARTMENUPAGE_VARIABLE}" ;debug

StrCmp ${MUI_STARTMENUPAGE_VARIABLE} "${MUI_PRODUCT}" PathGood
StrCmp ${MUI_STARTMENUPAGE_VARIABLE} "" PathBad

Push ${MUI_STARTMENUPAGE_VARIABLE}
Call GetFileName ; get last part of path
Pop $R0 ;$R0 is now "last part of path"
StrCmp $R0 "${MUI_PRODUCT}" PathGood
PathBad:
MessageBox MB_OK|MB_ICONSTOP "Problem with folder name. The Start Menu folder (or sub-folder) must be ${MUI_PRODUCT}"
Abort ; stay on page
PathGood:
FunctionEnd

Thank you,
Lilla