vendor table

hi all

i have created a flow field in the vendor table in which i would be needing the balance of the invoices with on hold column having a value of ''Y' from the vendor ledger entry table. below written is the calcformula


Sum("Vendor Ledger Entry"."Remaining Amt. (LCY)" WHERE (Vendor No.=FIELD(No.),On Hold=FILTER(<>'')))


but i am getting the below shown error



please help me.

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