Multiple selections


For a testcase I need to select 15 rows.
Ideally I want to select the first row and the last row while holding SHIFT.
However for some reason it doesn’t work quite as well as I want to with Katalon.

I have the following setup.
I use the Robot class and I select the first row. Then I press shift and click on the 14th row to select the first 15 rows. However for some reason when Katalon does it, it does single clicks.
But when I do it manually, it selects them all.

Robot rb =new Robot()‘Main/click_Tab0’))

Is there a solution, workaround for me to be able to do this?