Get Look up value from combo box

[Brianmaric]

I have a combo box with a data source of 'Quote Line Items'.  I want a text box to reference a field on that Entity but not on the available list of fields.  How do I do that?

[VijayTailor · Accepted solution]

Hi @Brianmaric ,

As i understood from you problem , this is the way.

But the response does not satisfy your expectation then, Please explain in a proper way like what you going to achieve.  
Thanks,
(A suggested approach based on my Understanding for above you mentioned)