DeleteMemberShipRule CollectionRuleQuery in C#

Question

Hello,
recently i'm creating a script that automatically removes a  single membership rule out of a SCCM collection using c#. For a directrule I've already managed to create the code and it works fine.
The problem is that in our compagny, we use query rule memberships instead of direct rules. for so far I'm not able to delete a single membership rule based on a query.
After executing the code, SCCM smsprov.log returns collectionrule not found. Seems to be that my queryexpression is not right.
Who can hep solving this issue, I'm allmost convinced it is something small.
Below my code snippet within a try /catch :
   string queryExpression = "select SMS_R_SYSTEM.ResourceID,SMS_R_SYSTEM.ResourceType,SMS_R_SYSTEM.Name,SMS_R_SYSTEM.SMSUniqueIdentifier,SMS_R_SYSTEM.ResourceDomainORWorkgroup,SMS_R_SYSTEM.Client from SMS_R_System where SMS_R_System.Name
in (\""+ system + "\")";
   IResultObject myCollection = connection.GetInstance(@"SMS_Collection.CollectionID='" + collID + "'");
   //Create a new rule object and save the resource ID
   IResultObject collectionRule = connection.CreateEmbeddedObjectInstance("SMS_CollectionRuleQuery");
   // fill in resourceID
   collectionRule["RuleName"].StringValue = system + " ResourceID = " + sysID;
   collectionRule["limitToCollectionID"].StringValue = collID;
   collectionRule["QueryExpression"].StringValue = queryExpression;
   //The rule object as parameter
   Dictionary<string, object> inParams = new Dictionary<string, object>();
   inParams.Add("collectionRule", collectionRule);
   // Delete the rule.
   myCollection.ExecuteMethod("DeleteMemberShipRule", inParams);
Thanks in advance

Answer 1

I am deleting using QueryID and it works. Hopefully, you find this useful:
// get your collectionID and queryID
IResultObject collection = wqlConnection.CreateInstance("SMS_Collection");
collection["CollectionID"].StringValue = collectionID;
collection.Get();
IResultObject query = wqlConnection.CreateInstance("SMS_CollectionRuleQuery");
query["QueryID"].StringValue = queryID;
Dictionary<string, object> membershipRuleParameters = new Dictionary<string, object>();
membershipRuleParameters.Add("CollectionRule", query);
collection.ExecuteMethod("DeleteMembershipRule", membershipRuleParameters);