Result from RPC not being utilized

Custom Apps
1

I am attempting to utilize an RPC call to populate a parameter in a module without much success.

Using the debug tool I can see that the RPC itself is functioning correctly, but either due to being blind or dumb, I cannot seem to get the desired field in the response to populate in the module.

I am using the below in the RPC communication section for the response:

"iterate": "{{body.Items}}",                 
    "value": "{{item.UID}}",                    
	"type": "uuid",
	"required": "{{item.isRequired == 1}}",
	"label": "customerUID"

What I am intending to achieve is to use the “UID” field in the response.

For the module parameters that this is being used in, the relevant section of JSON is as below:

	"name": "customerUID",
	"type": "uuid",
	"rpc": {
        "label": "Search Customers",
        "url": "rpc://rpcCustomerUID",
        "parameters": [
            {
                "name": "select",
                "label": "Type",
                "type": "select",
                "options": [
                    {
                        "label": "Company",
                        "value": "CompanyName"
                    },
                    {
                        "label": "Individual",
                        "value": "concat(concat(FirstName, ' '), LastName)"
					}
				]
            },
			{
				"name": "filter",
				"label": "Name",
				"type": "text"
			}

I am guessing I am missing something super obvious, so any help to push me in the right direction would be greatly appreciated.