diff --git a/eng/common/core-templates/job/onelocbuild.yml b/eng/common/core-templates/job/onelocbuild.yml
index eefed3b667a..86ea9f63504 100644
--- a/eng/common/core-templates/job/onelocbuild.yml
+++ b/eng/common/core-templates/job/onelocbuild.yml
@@ -22,6 +22,7 @@ parameters:
   GitHubOrg: dotnet
   MirrorRepo: ''
   MirrorBranch: main
+  xLocCustomPowerShellScript: ''
   condition: ''
   JobNameSuffix: ''
   is1ESPipeline: ''
@@ -97,6 +98,8 @@ jobs:
           gitHubOrganization: ${{ parameters.GitHubOrg }}
           mirrorRepo: ${{ parameters.MirrorRepo }}
           mirrorBranch: ${{ parameters.MirrorBranch }}
+        ${{ if ne(parameters.xLocCustomPowerShellScript, '') }}:
+          xLocCustomPowerShellScript: ${{ parameters.xLocCustomPowerShellScript }}
       condition: ${{ parameters.condition }}
 
     # Copy the locProject.json to the root of the Loc directory, then publish a pipeline artifact