Clear subform B particular row when decision-box in subform A is unchecked

Clear subform B particular row when decision-box in subform A is unchecked

Form A has 2 subform's, subform A & B,subform B is copy of subform A except few columns.
When successful-EDIT entry is done both have same data.Problem is that when a checkbox in unchecked in subform B onEDIT -> onUSERINPUT , I can't user clear() to remove that particular row in subform B( having same data unchecked in subform A)
i tried below example also but it did't work :
  1. ​fetchedRecords = Employees [ Date == today ];
  2. for each rec in fetchedRecords 
  3. {
  4. rec.Job_Experience.clear();
  5. }
How can i achieve this ?