Index: sources/gui/qml/globals/Variables.qml
===================================================================
diff -u -rc47d6680e0514292d7cc9b59ba0361aa8f335927 -r95ae95f5ed982c3d6a3299c87df7ecb0dca703d1
--- sources/gui/qml/globals/Variables.qml	(.../Variables.qml)	(revision c47d6680e0514292d7cc9b59ba0361aa8f335927)
+++ sources/gui/qml/globals/Variables.qml	(.../Variables.qml)	(revision 95ae95f5ed982c3d6a3299c87df7ecb0dca703d1)
@@ -238,7 +238,7 @@
 
     // 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"   )