HI.. I have created a custom field Multi select type on Sale order. filter it type quotation/estimate. On sale order i want to update my that custom field on the basis of customer. when customer is selected it will show only quotation numbers/estimate in custom list field related to that customer. How ill apply this filter. Second when quotation numbers/estimate are updated in custom list, I want to update Item list on the basis of quotation selected/estimate. I.e. items only shows list related to items added to that specific quotation/estimate selected.