>>Does not work:
>>
>>

>>seek &Thisform.cSeekValueRef
>>

>>
>>Does work:
>>
>>

>>lcSeekValueRef=Thisform.cSeekValueRef
>>seek &lcSeekValueRef
>>

>>
>>Am I correct? Why is it this way?

>Just to answer the general question, you can only macro-expand variables, not fields or properties.

I have used macro substitution with table.fields -->

lcAlias = ALIAS()

REPLACE &lcAlias..fieldname WITH lcValue

The key here is that you have to use two periods (..) -- the first ends the macro substitution, the second separates the field name. I have used this for passing a table reference to a UDF where the table alias may be different/unknown at runtime (generic UDF).