diff --git a/tasmota/xdrv_10_scripter.ino b/tasmota/xdrv_10_scripter.ino
index db82304706fc..4485ea6f7341 100755
--- a/tasmota/xdrv_10_scripter.ino
+++ b/tasmota/xdrv_10_scripter.ino
@@ -164,7 +164,10 @@ void Script_ticker4_end(void) {
 #endif
 #endif
 
+#if defined(USE_SML_M) && defined (USE_SML_SCRIPT_CMD)
 extern uint8_t sml_json_enable;
+extern uint8_t dvalid[SML_MAX_VARS];
+#endif
 
 #if defined(EEP_SCRIPT_SIZE) && !defined(ESP32)
 
@@ -784,6 +787,9 @@ char *script;
       if (imemptr) free(imemptr);
       return -4;
     }
+
+    memset(script_mem, 0, script_mem_size);
+
     glob_script_mem.script_mem = script_mem;
     glob_script_mem.script_mem_size = script_mem_size;
 
@@ -1749,6 +1755,7 @@ chknext:
           len = 0;
           goto exit;
         }
+#endif
         if (!strncmp(vname, "abs(", 4)) {
           lp=GetNumericArgument(lp + 4, OPER_EQU, &fvar, gv);
           fvar = fabs(fvar);
@@ -1756,7 +1763,7 @@ chknext:
           len = 0;
           goto exit;
         }
-#endif
+
         if (!strncmp(vname, "asc(", 4)) {
           char str[SCRIPT_MAXSSIZE];
           lp = GetStringArgument(lp + 4, OPER_EQU, str, gv);
@@ -3152,6 +3159,21 @@ chknext:
           len = 0;
           goto exit;
         }
+        if (!strncmp(vname, "smlv[", 5)) {
+          lp = GetNumericArgument(lp + 5, OPER_EQU, &fvar, gv);
+          if (!fvar) {
+            for (uint8_t cnt = 0; cnt < SML_MAX_VARS; cnt++) {
+              dvalid[cnt] = 0;
+            }
+            fvar = 0;
+          } else {
+            if (fvar < 1) fvar = 1;
+            fvar = dvalid[(uint32_t)fvar - 1];
+          }
+          lp++;
+          len = 0;
+          goto exit;
+        }
 #endif //USE_SML_M
         break;
       case 't':