1 files changed, 3 insertions, 0 deletions

diff --git a/src/WixToolset.Mba.Core/IEngine.cs b/src/WixToolset.Mba.Core/IEngine.cs
index b486e51d..8403352d 100644
--- a/src/WixToolset.Mba.Core/IEngine.cs
+++ b/src/WixToolset.Mba.Core/IEngine.cs
@@ -25,6 +25,9 @@ namespace WixToolset.Mba.Core
         /// </summary>
         void CloseSplashScreen();
 
+        /// <returns>0 if equal, 1 if version1 &gt; version2, -1 if version1 &lt; version2</returns>
+        int CompareVersions(string version1, string version2);
+
         /// <summary>
         /// Checks if a variable exists in the engine.
         /// </summary>