java.util.list in UI Designer

hi! i'm realy new in this world of bonitaBPM so please i hope your comprension. my question is:
how to create a table with a java.util.list in UI Designer, i'm making a form with a table but i can't set the parameter(java.util.list). The conector that i use is de CMIS to connect with alfresco and take a list of documents. but this conector return a Java.util.list.

Please help!