diff --git a/src-modules/module/xcube/schluesseltabellen/xcube_install.sql b/src-modules/module/xcube/schluesseltabellen/xcube_install.sql
index b160e83..79e1893 100644
--- a/src-modules/module/xcube/schluesseltabellen/xcube_install.sql
+++ b/src-modules/module/xcube/schluesseltabellen/xcube_install.sql
@@ -78,6 +78,15 @@
       "foreignkey_col":"abint",
       "foreignkey_cap":"dtxt",
       "sortfield":"dtxt"},
+       {"maskeninfo_id":21000,
+      "name":"sem_rueck_beur_ein", 
+      "caption":"Semester",
+      "foreignkey_tab":"semester",
+      "foreignkey_col":"tid",
+      "foreignkey_cap":"eintrag",
+      "sortfield":"tid",
+      "calc_gesamt":0},
+      
       <#-- Primärbuchungswürfel -->
       {"maskeninfo_id":21500,
       "name":"jahr", 
diff --git a/src-modules/module/xcube/schluesseltabellen/xcube_install_restrictions.sql b/src-modules/module/xcube/schluesseltabellen/xcube_install_restrictions.sql
index 845e096..cfdedee 100644
--- a/src-modules/module/xcube/schluesseltabellen/xcube_install_restrictions.sql
+++ b/src-modules/module/xcube/schluesseltabellen/xcube_install_restrictions.sql
@@ -1,5 +1,6 @@
 update xcube set restriction='<<Köpfe oder Fälle ?>>
-  and sem_rueck_beur_ein in (<<Semester>>)
+  and sem_rueck_beur_ein >= <<Seit Semester>>
+  /*and sem_rueck_beur_ein <= <<Bis Semester>>*/
   /* and <<Hörerstatus>> */
   /* AND fach_sem_zahl <= <<bis Fachsemester>> */
   /* and stichtag = <<Stichtag>> */