I have a custom object called opportunity_tracker_products__c that is associated to another custom object called design_registration__c.

Currently there is a trigger in place that will delete any DR's that have an opp_tracker_product.id on them.

Here is the trigger:

trigger CleanDRLineItem on Opportunity_Tracker_Products__c (before delete) { for (Integer i = 0; i < Trigger.old.size(); i++) { try { //replace OppLineId__c with actual refference name. Design_Registration__c[] oDRs = [select id from Design_Registration__c where Opp_tracker_line_ID__c = :trigger.old[i].id]; delete oDRs; } catch (System.QueryException ex) { //Do Nothing - There must not have been any to delete. } }}

 What I need to do is to not delete the records but update a boolean field and set the OwnerId to a specific user on the design_registration__c 

this is what i have so far:

trigger CleanDRLineItem on Opportunity_Tracker_Products__c (before delete) { List<Design_registration__c> updateDRs = [select dr.id, dr.Inactive__c, OwnerId from Design_Registration__c dr where Opp_tracker_line_ID__c IN :Trigger.new FOR UPDATE]; for(Design_Registration__c dr: updateDRs) { dr.Inactive__c = true; dr.OwnerId = '00540000000oJjiAAE'; } update updateDRs;}

 but I am getting an error 

Save error: Invalid bind expression type of SOBJECT:Opportunity_Tracker_Products__c for column of type String

 I am new to triggers and APEX (as I have stated in prior messages) and need help please.  I know that I am visiably doing something wrong, I would appreciate any feedback or ideas 

TIA  

~Mike