As mentioned by Steve Dark and whiteline there is no straight forward way to do it. However, you can use FirstSortedValue function along with the Dollar Sign Expansion to dynamically create filters in the MultiBox based on the ListBox selection. I'm attaching the sample for your reference and you can build based on this approach. This is completely scalable once setup and you don't have to use a Macro (I'm sure...that brings a smile on your face!).
Also, I'd recommend watching two video tutorials on how FirstSortedValue() function works. I've made these video tutorials on my blog. Here is the link (Copy & Paste the URL):
I think if you were to define exactly how many fields you wanted to bring through to your multibox you could do this.
I would create a list box using the $Field field, then I would create a variable using the GetFieldSelections function. Then I would create variables for each field I want to bring through to the multibox so if you want to show 10 fields set up 10 variables, use the substring function to get each selected item from the $Field list box into a separate variable. Then in your multibox click on the expression button and add your variables (i.e. $(vtest1) etc...)
Bit of a long way around it but I think it would work.
As whiteline says you can't do this exactly as you describe.
You may want to take a look at the Data Profiler app that I uploaded as this could provide you a basis for building something similar to what you describe:
As mentioned by Steve Dark and whiteline there is no straight forward way to do it. However, you can use FirstSortedValue function along with the Dollar Sign Expansion to dynamically create filters in the MultiBox based on the ListBox selection. I'm attaching the sample for your reference and you can build based on this approach. This is completely scalable once setup and you don't have to use a Macro (I'm sure...that brings a smile on your face!).
Also, I'd recommend watching two video tutorials on how FirstSortedValue() function works. I've made these video tutorials on my blog. Here is the link (Copy & Paste the URL):
