How to Input "list collector" field of "Submit Catalog Item request" from flow designer?

[陽希金]

hello.

How to Input "list collector" field of "Submit Catalog Item request" from flow designer?

When I try to drag and drop some type of data from data picker, the message shows  [the data is not allowed here].

The data I wanna use is retrieved from Get Catalog Variables actions.

[陽希金]

@Ankur Bawiskar 
This is setting "Submit Catalog Item Request" screenshot on Flow Designer.
In this example, "Child Catalog List Collector" allowed input "sys_user"s.

But, I can't click or input anything this field.
Neither input from DatapiIl.