Update concore_initval.m

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: pradeeban

concore_initval.m

@@ -4,6 +4,16 @@
     clean_str = strtrim(simtime_val);
     clean_str = regexprep(clean_str, '[\[\]]', '');
     result = sscanf(clean_str, '%f').';
+    % Guard against empty or invalid numeric input
+    if isempty(result)
+        concore.simtime = 0;
+        result = [];
+        return;
+    end
     concore.simtime = result(1);
-    result = result(2:length(result));
+    if numel(result) >= 2
+        result = result(2:end);
+    else
+        result = [];
+    end
 end