Update Mutation: Change value of a field in the Deal State Object

mutation updateCustomField1 {
  updateDealState(
    id: "a11248f0-f6bc-f6bc-f6bc-d11248f0x", #this is the full UUID of the deal (or Deal ID)
    stage: "name-of-stage-goes-here",
    input: {
      values: [
        {
	      	name: "custom-field-1",
  	    	value: "1234abcd"
        }
      ]
    }
  ) {
    errors
  }
}