Sorted.
For anyone interested:
I was working in the wrong embed point
! Start of "Option Filter & Order"
! [Priority 5000]
IF p_web.getSessionLevel() <= 4 !Dealers
WOR:OrderStatusID_OptionView{prop:filter} = p_web.CleanFilter(WOR:OrderStatusID_OptionView,'WOS:DisplayOrder <= 2')
END
! End of "Option Filter & Order"
Works perfectly