My GPS icon won't work.

I have put the Nilsson/Bookmark J35F panel into Kazunori Ito's Draken & it works well. It has GPS at Window08 which is brought up by shift+9. I have added a SimIcom GPS icon at 330,300,20,20 in the panel cfg at gauge83 (panel icons) & although it is there for all to see, when I click it, nothing happens. Shift+9 gets me fs9GPS.
I would be very grateful & happy if someone would tell me what I have done wrong or left undone. I have added GPS icons to other panels & they have worked as intended, but not this one
Many thanks,
TerryW
I would be very grateful & happy if someone would tell me what I have done wrong or left undone. I have added GPS icons to other panels & they have worked as intended, but not this one

Many thanks,
TerryW