I tried to patch my repeating table and for submit i wrote this onSelect submit button.
Patch('Travel Request', Defaults('Travel Request'),RequestForm.Updates,RequestForm_1.Updates); Navigate('Thank you',ScreenTransition.Cover);
ForAll(TravelCollection, If(!IsBlank(LineItem), Patch(TravelDetail, Defaults(TravelDetail), {Title:LineItem, EstimatedCost:LineCost, Remark:LineRemark, MasterID:RequestForm_1.LastSubmit.ID})));
All is good, but it just doesn't read my LastSubmit.ID and when passed to sharepoint, the MasterID field is empty. 😭
Thank you so much