complete XPVSUPDEM Provider and attached it to SMC Strategy ...

also Cleanup Test Provider and Make a Backup of it for Next Usages ...

Libraries/x-saherelm.x-poi.lib.mq5

@@ -377,7 +377,15 @@ class XCZone : public XCBasePOI
      */
     bool IsValidFrom()
     {
-        return IsSpecifiedValid(From());
+        //
+        bool result = false;
+
+        //
+        datetime from = From();
+        result = IsSpecifiedValid(from);
+
+        //
+        return result;
     }
 
     //
@@ -2822,6 +2830,10 @@ class XCTicksZone : public XCTwoBarZone
 
         //
         result = IsValid();
+        if (!result)
+        {
+            return result;
+        }
 
         //
         // Try to Find Out PERIOD_1M times in each zone ...