I wrote plugin that fire on phonecall step is setstatedynamic. I register post image in step my plugin.I get phonecall entity from postimage. And When i set phonecallid to origanitingactivityid on campaign response

(
like

campaignResponse.OriginatingActivityId = new EntityReference();
campaignResponse.OriginatingActivityId.LogicalName = PhoneCall.EntityLogicalName;
campaignResponse.OriginatingActivityId.Id = phoneCall.ActivityId.Value;
)

Plugin throws timeout.(I set serviceproxy,Timeout property 30 minutes,its still throw timeout.) When i dont set originatingactivityid,campaingresponse is created.

Any suggestion about this problem.