Hello Eva,

Testing with MS4W 3.1.4 (MapServer 7.0.1) on Windows, I am able to pass "&ma_name=testing" in the url and the resulting GetCapabilities response correctly replaces that in the wms_onlineresource value. Note that my validation block is slightly different than yours:

  WEB
    VALIDATION
      "ma_name" "[a-z]+"
    END
    METADATA
      "wms_onlineresource" "http://url/cgi-bin/gp_%ma_name%_com_wms?";
      ...
    END
    ...
  END


-jeff


--
Jeff McKenna
MapServer Consulting and Training Services
http://www.gatewaygeomatics.com/



On 2016-07-11 12:39 PM, Eva Jelínková wrote:
Dear mapserv people,

does anybody has an experience with runtime substitution in MAP->WEB:
METADATA section of mapfile (MapServer 7)?
http://mapserver.org/cgi/runsub.html#parameters-supported

I am trying to substitute part of 'wms_onlineresource' value, using
default value in VALIDATION. GetCapabilities request gives me string
with %name_of_parameter% in the URL.






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