I am working with the oData endpoint available in CRM 2011. I am trying to use the arithmetic functions which are part of oData but getting a HTTP 400 Bad Request when I try this URL: https://msops.crm.dynamics.com/xrmservices/2011/organizationdata.svc/OpportunitySet(guid'4fc76108-2823-e011-86ab-1cc1dee89aae')?$filter=EstimatedValue/Value add 500.0000
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