CRM 2011 Related Entity Numbering/ Calculate Amount Of Related Entity Records

Problem: -I need to c amount of related entity B tied to parent entity A. -1 Entity A : Many Entity B -Need auto numbering on amount of related record (entity B) tied to entity A.

Solution: -Add function during onLoad(); -Add one ref javascript Name Navi_AutoNumber.js

eg. onLoad Script function onLoad() {     GetAssociatedRecords("Entity B Name", "Entity B Look Up Field Scheme Name", "Relation Name"); }

eg. Navi_AutoNumber.js function GetAssociatedRecords(associatedEntityName, primaryIdSchemaName, relationshipSchemaName){ try{ if(Xrm.Page.data.entity.getId() != null){ var bProceed = false; var nav = 'nav_' + relationshipSchemaName; var items = Xrm.Page.ui.navigation.items.get(); for (var i in items) { var item = items[i]; if(item.getId().toLowerCase() == nav.toLowerCase()){ bProceed = true; break; } } if(bProceed){ var relationshipIdvalue = Xrm.Page.data.entity.getId(); var columns = [];        var Filter = primaryIdSchemaName + "/Id eq (guid'" + relationshipIdvalue + "')"    var Collection = CrmRestKit.RetrieveMultiple(associatedEntityName, columns, Filter);        var totalRecords = Collection.results.length;            if(document.getElementById(nav) != null)    {     document.getElementById(nav).getElementsByTagName('NOBR')[0].innerText = " (" + totalRecords + ")" + document.getElementById(nav).getElementsByTagName('NOBR')[0].innerText   ;    }        //return Collection;    }    }     }catch(err){     alert(err);     } }

How it will look Like