get a parent members in a list for list of lvl0 members in groovy

Summary:

get a parent members in a list for list of lvl0 members in groovy

Content (required):

I have lvl0 members in list extracted from flexform

need to create another list with the parents of those lvl0 members from the first list

once i have list, i can use those members in calculations

from my code last for loop is not working. pls help

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):

Cube cube = operation.application.getCube("PLN")

Dimension mgmtDim = operation.application.getDimension("Management")

/* this gives me the list of lvl0 members which are on rows in a flexform*/