How to Modify[Extends] Standard existing Table Relation in Business central Using AL [Cloud Version]

Hi All,

I want to Modify the table relation of the "Requisition Line" [246] table for Field "No.". 

the Standard table relation For "No." The field is as below 

IF (Type = CONST("G/L Account")) "G/L Account"
            ELSE
            IF (Type = CONST(Item),
                                     "Worksheet Template Name" = FILTER(<> ''),
                                     "Journal Batch Name" = FILTER(<> '')) Item WHERE(Type = CONST(Inventory))
            ELSE
            IF (Type = CONST(Item),
                                              "Worksheet Template Name" = CONST(''),
                                              "Journal Batch Name" = CONST('')) Item;
And I want to Modify below as using a table extension 
IF (Type = CONST("G/L Account")) "G/L Account"
            ELSE
            IF (Type = CONST(Item),
                                     "Worksheet Template Name" = FILTER(<> ''),
                                     "Journal Batch Name" = FILTER(<> '')) Item WHERE(Type = CONST(Inventory)"Item Category Code" = const('FURNITURE'))
            ELSE
            IF (Type = CONST(Item),
                                              "Worksheet Template Name" = CONST(''),
                                              "Journal Batch Name" = CONST('')) Item;

Is it Possible the modify the standard table relation using table extension?  

Thanks in Advanced.

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