Hi folks,

I'm trying to create an object record that populates fields that have the same API name on another object in a general way. So... when I create a record on object A, a trigger creates a new record on object B, sees which of the fields on the two objects have the same API name, then uses the field values from the record on object A and puts them in the appropriate field in object B. The code below yields the error "expression cannot be assigned" at the line that begins newEoi.get(sharedFields[i]) in the for loop inside the trigger.new loop.

trigger PROC_CreateEoi on Procurement__c(after insert){
	//retrieve a list of all of the fields on the Procurement and EPOI objects
	Set<String> matchProcFields = Procurement__c.sObjectType.getDescribe().fields.getMap().keySet();
	Set<String> matEoiFields = EOI__c.sObjectType.getDescribe().fields.getMap().keySet();
	
	List<String> procFieldComparison = new List<String>();
	List<String> eoiFieldComparison = new List<String>();
	
	
	//search for fields that have the same API name in both the Procurement__c object and the EOI__c object.
	
	Set<String> fieldsTemp = new Set<String>();
	for(integer i = 0; i < eoiFieldComparison.size();i++){
		for(integer j = 0;j<procFieldComparison.size();j++){
			if(procFieldComparison[j] == eoiFieldComparison[i]){
				fieldsTemp.add(eoiFieldComparison[i]);
			}
		}
	}
	List<String> sharedFields = new List<String>();
	sharedFields.addAll(fieldsTemp);
	
	for(Procurement__c newProc:trigger.new){
		EOI__c newEoi = new Milestone1_Project__c();
		for(integer i = 0;i<sharedFields.size();i++){
			//assign the variables with the same name to the same value in the newly-created EOI record
			newEoi.get(sharedFields[i]) = newProc.get(sharedFields[i]);
		}
	}
}

I've tried doing this with "try and catch" statements and using String.valueof() etc. to see if that would handle the error, but I still get the "Expression cannot be assigned" error. So, any ideas how I assign the field values in this general way, without having to explicitly type all of the field names?

Thanks in advance, wonderful people of developerforce :D

Lee