Is each repeating value in a different record of the portal table?
Do you have a primary key (unique identifier) field defined in your portal field?
If so, you can combine a self join with a portal filter to omit duplicate values.
The relationship from LayoutTable to PortalTable would be the same as you have no. PortalTable 2 would be a new occurrence of your PortalTable with this relationship:
PortalTable::RepeatValueField = PortalTable 2::RepeatValueField
Then set up your portal to PortalTable on a LayoutTable based layout with this portal filter:
PortalTable::primarykey = PortalTable 2::primaryKey
An alternative method just used for displaying data (no editing) would be to use a mult-row sized calculation field with ExecuteSQL() and the Distinct keyword to list the same data all in one large field.
i have also this problem pop up
and i am thinking the case as to get the value of first
when using List the repeated value are all there, and shall really use and somewat filter out to put back in to portal
than just trying on the portal
still working on