update rel-gain type in update config

webservice/update_config.py

@@ -15,7 +15,7 @@ AGIPD_CONFIGURATIONS = {
     {
         "common-mode": {'type': bool},
         "force-hg-if-below": {'type': int},
-        "rel-gain": {'type': bool},
+        "rel-gain": {'type': str},
         "xray-gain": {'type': bool},
         "blc-noise": {'type': bool},
         "blc-set-min": {'type': bool},