Showing physicalInventCalculated() display method on (inventsum table)as calumon (field) on report.

Dear Experts,

I want to show Physical inventory field On Hand form and code of display method on table is( 

display public InventQtyPhysicalOnhand physicalInventCalculated()
{
return this.PostedQty + this.Received - this.Deducted + this.Registered - this.Picked;
} 

and available physicalfields and code is on datasource of form(

display public InventQtyAvailPhysical availPhysical(InventSum _inventSum)
{
return inventAvailabilityFormCache.availabilityFromSumJoinedWithDim(_inventSum, inventDim_ds).availPhysical();
}

Both of the fields are on (On Hand form)  both fields i want to show in Report as a field as both of the column on  OnHand form are display method, please help.

Thanks and Regards,

Shabir Ahmad