Is there a way for an GP plugin to check if an Effect's parameter is disabled?

Question

Me again!
Does anyone know of a way for a GP plugin to check if an applied effect's parameter is disabled?
I've been banging my head on this one for a couple days with no luck.
It looks like this used to be possible via AEGP_GetDynamicStreamFlags  but the SDK docs specifically states that it no longer works as of CS5:
AEGP_DynStreamFlag_DISABLED A read-only flag. Indicates whether the AEGP_StreamRefH is grayed out in the UI. Note that as of CS5, this flag will not be returned if a parameter is disabled. Instead, check PF_PUI_DISABLEDin ui_flags.
I can't seem to figure out a way to get access to ui_flags from an GP plugin.  The only time I've seen it available in the SDK sample projects is from within an Effect.
Is there a way to get an instance of ui_flags outside of the effect itself?
I also tried using Javascript to do the work, but the call always returns true regardless of the parameter's state:
app.project.item(1).layer(1).property('Effects').property(1).property(1).enabled;
Any suggestions?
thanks!
-Andy

Answer 1

Thanks Shachar. 
I had tried using AEGP_GetEffectParamUnionByIndex and forgot to mention that in the original post, oops!
After you suggested it, I looked over it once again, but still couldn't find any promising/useful attributes.
It seems that the structs returned within the union don't have a parking spot for the ui_flags.  I double checked this in AE_Effect.h, and it matches up with what I'm seeing in the xcode debugger.
Heres one example (Checkbox rom AE_Effect.h):
/** CheckBox -- PF_Param_CHECKBOX
typedef struct {
  /* PARAMETER VALUE */
  PF_ParamValue value;
  /* PARAMETER DESCRIPTION */
  PF_Boolean dephault;
  A_char reserved; /* padding */
  A_short reserved1;
  union {
  const A_char *nameptr;
  } u;
} PF_CheckBoxDef;
So, they have a few attributes (name, default values, and current value) but no ui_flags.  Bummer!
-Andy