Import script into Katalon Script folder

Hi there,

I have a
question about moving groovy scripts in to Katalon folder.
I write
groovy scripts and move them into "Katalon
project folder/Scripts"
, and write .ts file in folder Test Cases based on the rule
of folder.

But when
I open the test case in Katalon GUI interface, the “import library (see figure
below)” codes are not showed.

I have to
copy/paste these codes into Katalon editor so that the test can run smoothly.

Do you know
happen about this situation? Thank you in advance!

螢幕快照 2018-06-21 下午4.22.55.png