diff --git a/plt/index.php b/plt/index.php
index e160364..8f7e3c3 100755
--- a/plt/index.php
+++ b/plt/index.php
@@ -182,7 +182,8 @@ function runJavascriptCodeTrigger($functionName, $activeTable, $row) {
 function updateDatabaseRow($tableName, $originalRow, $newRowValue) {
     if (empty($originalRow) || empty($newRowValue)) return;
     $pkColsName = getTblPrimaryKeyColName($tableName);
-    $pkColsValues = array_map(fn($cName) => $originalRow[$cName], $pkColsName);
+    if (empty($pkColsName)) {echo redText("ERROR: No PRIMARY KEY foudn for table: $tableName\n");    return;}
+    $pkColsValues = array_map(fn($cName) => $originalRow[$cName], $pkColsName);    
 
     $setStatements = [];
     foreach ($newRowValue as $k => $v) {
@@ -194,12 +195,12 @@ function updateDatabaseRow($tableName, $originalRow, $newRowValue) {
     foreach ($pkColsName as $k) {
         $val = is_numeric($originalRow[$k]) ? $originalRow[$k] : "'" . $originalRow[$k] . "'";
         $whereStatements[] = "$k = $val";
-    }
+    }    
 
     $sql_instruction = "UPDATE $tableName SET " . implode(", ", $setStatements) . " WHERE " . implode(" AND ", $whereStatements);
     try {sql($sql_instruction);} 
     catch (Exception $e) {
-        echo "ERROR: while trying $sql_instruction\n\n";print_r($e->getMessage());
+        echo redText("ERROR: while trying $sql_instruction\n\n");print_r($e->getMessage());
     }
     
 }