Happy Friday All!

Our AEs don't always remeber to add CampaignMembers when they create Tasks related to the Campaign. To save the AEs and kepp marketing happy it was decided that we could use an Apex Trigger to check if the Contact was already a CampaignMember and add if they were not.

I think my code is close, but it is not adding the CampaignMember. Can someone please take a look at my code to show me what I missing?

Kind regards,

Robert.

trigger Task_to_CampaignMember on Task (after insert, before update) {

//WhoId is ContactId;
//WhatId is CampaignId;

  List<ID> WhoIds = new List<ID>();
  List<String> prStr = new List<String>();
  List<CampaignMember> newList = new List<CampaignMember>();

for(Task Tsk: Trigger.new){
    String WhtId = Tsk.WhatId;
    String CmpPfx = WhtId.substring(0,3);	 

    if(CmpPfx == '701') //'701' Prefix is Campaign
	{
		prStr.add(Tsk.WhatId); 
	}
}

  
Map<String,Id> cmMap = new Map<String,ID>();

for(CampaignMember cm1 :[select id,CampaignId,ContactId from CampaignMember where CampaignId IN: prStr])
{
	cmMap.put(cm1.CampaignId,cm1.Id);

}

for(Task Tsk: Trigger.new){
    if(Tsk.WhatId!=Null)

	{
		CampaignMember cm = new CampaignMember(CampaignId=Tsk.WhatId,ContactId=Tsk.Whoid,Status='Responded');
		newList.add(cm);
	}
}

if(newList.size()==0)
{
	insert newList;
}


}