Xantia Door Trim

I wonder if anyone can help. The trim on the inside of the driver's door on my 1999 Xantia ha started to come loose. A particular problem
is that the vertical pull-bar which is used to pull the door closed has separated from the plastic moulding surrounding the window switches. I need to get in to tigten things up. Can anybody tell me how to take the panel off so that I can get to the fixings which are presumably hidden at the back.
Many Thanks
Simon Goddard
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