GDL, Zone Label

[Anonymous]

Am I missing something or do I have something wrong with my eyes, but why the first line is okay but the second is not:

text2 0, 0, ROOM_NUMBER + ", " + ROOM_NAME
text2 0, 1, ROOM_AREA + " m2"

Code is part of zone label 2D script.
The 1st line shows up in project plan "01, Living Room", for example, while the 2nd line creates an error in GDL editing window when I check the code. If I cut the line with '!' after 'ROOM_AREA', then it'll be fine.

Thanks!

[Jochen Suehlo]

You cannot combine a number with a string.
If ROOM_AREA is a number, you must convert it into a String,
e.g. by STR(ROOM_AREA,3,2) or similar.

[Anonymous]

Joachim wrote:
You cannot combine a number with a string.

But isn't that the case at first line, too? I combined there:
the ROOM_NUMBER (I think its type is numerical, or...?)
+
comma inside quotation marks (that's string)
+
ROOM_NAME (its type is string, I guess)

So if the ROOM_NUMBER is string, then it's my mistake.

[Erich]

Despite the variable name, ROOM_NUMBER is a string. ROOM_AREA is a calculated number that you need to convert to a string.

[Anonymous]

All right, that's clear! Thank you both for quick response!