diff --git a/.github/workflows/rununitybuildmultiversion.yml b/.github/workflows/rununitybuildmultiversion.yml
index 366f99ce..76b095be 100644
--- a/.github/workflows/rununitybuildmultiversion.yml
+++ b/.github/workflows/rununitybuildmultiversion.yml
@@ -130,6 +130,13 @@ jobs:
               return 0
             }
           }
+
+          function Get-LetterCount
+          {
+            Param ([string]$string)
+            echo "String [$string] has a length of [$string.Length]"
+            return $string.Length
+          }
           echo "::endgroup::"
 
           echo "::group::Get Installed Unity version based on Matrix"
@@ -141,7 +148,7 @@ jobs:
           echo "Installed unity versions are {$InstalledUnityVersions}"
           echo "Unity install path is {$editorRootPath}"
 
-          $versionLength = [string]$unityVersion.Length
+          $versionLength = Get-LetterCount $unityVersion
           if ($versionLength -eq 4) {
             $queryUnityVersion = GetString $InstalledUnityVersions "$unityVersion.{4,7}" -MatchIndex 0
             echo "Found [$queryUnityVersion] from [$InstalledUnityVersions] with version length $versionLength"