[mapserver-users] Parameter substitution problem

[Asad Ullah]

List,
I am trying to substitute DATA parameter in my mapfile with a call from Openlayers as follow:

map_layer[OMI_CP]=DATA+OMI-Aura_L3-OMCLDRRclpWMSNRT_"+ amsreDate + ".png"

The mapfile is:

LAYER
 NAME "OMI_CP"
    TYPE RASTER
    STATUS DEFAULT
    OFFSITE 0 0 0
 PROJECTION
    "init=epsg:4326"
  END
    DATA "OMI-Aura_L3-OMCLDRRclpWMSNRT_20110922.png"
VALIDATION
  'DATA' '^OMI_.*\.png$'
END

The call should change the date part (20110922) of the png filename but it is not doing it. Can anyone point to what I am doing wrong here?

Thanks,

Asad
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