diff --git a/mocha-common/data/libraries/yaml/net.alcetech.Mocha.System/003-Classes/00049-SelectionFunction.yaml b/mocha-common/data/libraries/yaml/net.alcetech.Mocha.System/003-Classes/00049-SelectionFunction.yaml
index c88937d..aca1541 100644
--- a/mocha-common/data/libraries/yaml/net.alcetech.Mocha.System/003-Classes/00049-SelectionFunction.yaml
+++ b/mocha-common/data/libraries/yaml/net.alcetech.Mocha.System/003-Classes/00049-SelectionFunction.yaml
@@ -4,6 +4,7 @@
 
   - IDI_SelectionFunction_Minimum: '{1ff7be8c-fe48-4154-9028-8ee84b7dc367}'
   - IDI_SelectionFunction_Maximum: '{dda6c31d-5bea-41a9-a6bc-0e5c189784da}'
+  - IDI_SelectionFunction_First: '{4a196b8f-ca55-4f3a-a443-f960bfdb3bc6}'
   
 - library: '&IDL_MochaBaseSystem;'
   instances:
@@ -18,4 +19,6 @@
   - selectionFunction: '&IDI_SelectionFunction_Minimum;'
     name: 'Minimum'
   - selectionFunction: '&IDI_SelectionFunction_Maximum;'
-    name: 'Maximum'
\ No newline at end of file
+    name: 'Maximum'
+  - selectionFunction: '&IDI_SelectionFunction_First;'
+    name: 'First'
\ No newline at end of file