Hi all

I'm using GeoExt and the Geoserver printing module the create pdf files
for printing.
Since I would like to preserve the ascpect ration of the screen for the
pdf print, I would like to pass the width and height of the map tho the
server instead of the opposite way. The user manual of the printing
module says, I can use variable substitution in this part but I didn't
find out how to do that.
Has any one experience with passing variables form the client to the
server? Or is there a website with further imformation
I tried somethin like this in the config.yaml file:

          width: ${mapwith}
          height: ${mapheight}

This trowths an error in the LoadCapabilities request. Second problem:
how/where the pass the variables in the json string


Regard's
Peter





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