Hi Knavis
The lookup control has a few options
The simplest is the search option, but it works with one field only - for example SQL_Plant = Form_Plant

The other option is the Raw Where, which I used in this example

[ClassName] = '[/my:myFields/my:SolutionFieldsGroup/my:ClassName]' and [CharacteristicNameDescription] = '[/my:myFields/my:SolutionFieldsGroup/my:CharacteristicNameDesc]'
What I'm doing above is querying a table that has class name, characteristic description and then want to use the lookup control pop-up to list the values to select. You can use as many filters as you like, and it works well in a table.
It looks like this just as a test


as you know, you can include whatever you want to display in the lookup pop-up.
Here is an example in a demo with product update that has multiple classes and characteristics - and only I show which values can be selected - if there are values to select

Color shows 
Grade would show other values, etc.
Hope that gives you some ideas.
Best Regards,
Sigrid
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Sigrid Kok
*Precisely Software Inc.
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