[mapguide-users] text labels sometimes null when using concat and line breaks in studio

VOLZ Mark (FN) Mark.Volz at ergon.com.au
Tue Oct 11 18:57:47 EDT 2011

Concat only seems to work "as expected" when you only do 2
fields/strings at a time but you can nest them.

To do the below try this;
Concat (   COLUMN_A  , concat('\P', COLUMN_B ))

-----Original Message-----
From: mapguide-users-bounces at lists.osgeo.org
[mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of tmblackflag
Sent: Wednesday, 12 October 2011 7:18 AM
To: mapguide-users at lists.osgeo.org
Subject: [mapguide-users] text labels sometimes null when using concat
and line breaks in studio


I'm building text labels on top of feature sources with this expression:

 Concat (   COLUMN_A  , '\P', COLUMN_B )

It is giving me the line break that i want between the two fields but
about 25% of my polygons are missing the label. When i select the layer
in the AJAX viewer I see all the data there. Any idea why it would

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