I have table with records i want to select multiple record from there and then want to pass that sel

Here’s a general approach I might try for this:

1) clone the model you’re using in your table (table 1)
2) use the cloned model in your popup (table 2)
3) set up a mass action on table 1 that will adopt those selected rows into model 2, then show the popup with table 2 inside

I’m assuming you are trying to show the selected records in a table in your popup, but the main idea of cloning the model and then using the “adopt rows” action should still do what you need, on a basic level.