diff --git a/configuration/backend_configuration/ampathforms/ampath_poc_adult_return_visit_form_v1.6_core-demo.json b/configuration/backend_configuration/ampathforms/ampath_poc_adult_return_visit_form_v1.6_core-demo.json
index 094b3b2..06480cb 100644
--- a/configuration/backend_configuration/ampathforms/ampath_poc_adult_return_visit_form_v1.6_core-demo.json
+++ b/configuration/backend_configuration/ampathforms/ampath_poc_adult_return_visit_form_v1.6_core-demo.json
@@ -3606,7 +3606,7 @@
 									}
 								]
 							},
-							"historicalExpression": "\"_.isEmpty(HD.getObject('prevEnc').getValue('5090AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA')) ? undefined : HD.getObject('prevEnc').getValue('5090AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA')\"",
+							"historicalExpression": "_.isEmpty(HD.getObject('prevEnc').getValue('5090AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA')) ? undefined : HD.getObject('prevEnc').getValue('5090AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA')\"",
 							"id": "height",
 							"validators": []
 						},
@@ -7822,4 +7822,4 @@
 			]
 		}
 	]
-}
+}
\ No newline at end of file