Release start date and end date

Hi all, 

i need your help please with the following:

ALM QC is makeing the Sart Date and End Date required in Release module:

i am able to set IsRequired to False when creating new release but for some reason when i try to add a new Cycle under that release created it complains about missing Start Date and End Date.

 and i also tried to just set those values as not visible but i cant get a success with that

Sub Release_New
On Error Resume Next
Release_Fields("REL_START_DATE").IsRequired = False
Release_Fields("REL_END_DATE").IsRequired = False
On Error GoTo 0
End Sub

Sub Release_AfterPost
On Error Resume Next
Release_Fields("REL_START_DATE").IsRequired = False
Release_Fields("REL_END_DATE").IsRequired = False
On Error GoTo 0
End Sub

Sub Cycle_New
On Error Resume Next
Release_Fields("REL_START_DATE").IsRequired = False
Release_Fields("REL_END_DATE").IsRequired = False
On Error GoTo 0
End Sub

Sub Release_MoveTo
On Error Resume Next
Release_Fields("REL_START_DATE").IsRequired = False
Release_Fields("REL_END_DATE").IsRequired = False
On Error GoTo 0
End Sub

Sub Release_FieldChange(FieldName)
On Error Resume Next
Release_Fields("REL_START_DATE").IsRequired = False
Release_Fields("REL_END_DATE").IsRequired = False
On Error GoTo 0
End Sub