diff --git a/conversion.go b/conversion.go
index 237d31a5..84571b11 100644
--- a/conversion.go
+++ b/conversion.go
@@ -43,7 +43,7 @@ func convertFromStaticToDynamicValue(staticValue interface{}) interface{} {
 	case *Selection:
 		v = sv.v
 	case *Time:
-		v = sv.v
+		v = sv.v.Format(datetimeFormat)
 	case *Float:
 		v = sv.v
 	case *Many2One: