Clickable positioned symbol in mapserver WMS layer

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It is possible to make the positioned symbol (using ANCHORPOINT) in WMS layer clickable? The problem is that it is clickable only at the point of geometry (+ tolerance defined in map file), but when I cklick the area of the symbol it doesnt fire the right GetFeatureInfo event.

The symbol is defined like so:

SYMBOL NAME "symbol_name" TYPE PIXMAP IMAGE "icons/photo-marker.png" ANCHORPOINT 0.5 1ENDAnd later used in layer:

LAYER ... TYPE POINT ... TEMPLATE "blank.html" DUMP TRUE TOLERANCE 10 TOLERANCEUNITS pixels ... CLASS NAME "symbol_name_class" STYLE SYMBOL "symbol_name" END END ...END

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