Index: sources/gui/qml/globals/Variables.qml
===================================================================
diff -u -r124c2e38e72a1a655d9d479c9c7a1cd8c5d5e6c4 -r162a2f061ad0f7f9fefdcabda00cbf99d62d81bb
--- sources/gui/qml/globals/Variables.qml	(.../Variables.qml)	(revision 124c2e38e72a1a655d9d479c9c7a1cd8c5d5e6c4)
+++ sources/gui/qml/globals/Variables.qml	(.../Variables.qml)	(revision 162a2f061ad0f7f9fefdcabda00cbf99d62d81bb)
@@ -237,7 +237,7 @@
 
     // it is prefered to use the regExp instead of the RegExpValidator
     // otherwise an extra RegExpValidator object will always created here.
-    readonly property var regExp_PatientID: /[A-Za-z0-9]{1,20}/
+    readonly property var regExp_PatientID: /[A-Za-z0-9_\-\.]{1,20}/
 
 
     readonly property string preTreatmentStepLabelCreate            : qsTr("CREATE"   )