use setExists function

Author: vkovec

Assets/Integrations/Autodesk/maya2017/scripts/unityOneClick/commands.py

@@ -295,17 +295,15 @@ def doIt(self, args):
 
         if not self.loadUnityFbxExportSettings():
             return
-            
-        unity_fbx_file_path = self.getAttribute(self._exportSet, self._unityFbxFilePathAttr)
-        unity_fbx_file_name = self.getAttribute(self._exportSet, self._unityFbxFileNameAttr)
-        
 
         # select the export set for export, if it exists,
         # otherwise take what is currently selected
-        allSets = maya.cmds.listSets(allSets=True)
-        if self._exportSet in allSets:
+        if self.setExists(self._exportSet):
             maya.cmds.select(self._exportSet, r=True, ne=True)
 
+        unity_fbx_file_path = self.getAttribute(self._exportSet, self._unityFbxFilePathAttr)
+        unity_fbx_file_name = self.getAttribute(self._exportSet, self._unityFbxFileNameAttr)
+        
         if unity_fbx_file_path and unity_fbx_file_name:
             strCmd = r'file -force -options "" -typ "FBX export" -pr -es "{0}{1}"'.format(unity_fbx_file_path, unity_fbx_file_name);    
         else: