to help troubleshoot, change the following line:
$WA_Sql = "insert into " . $WA_table . " (" . $insertParamsObj->WA_tableValues . ") values (" . $insertParamsObj->WA_dbValues . ")";
to:
$WA_Sql = "insert into " . $WA_table . " (" . $insertParamsObj->WA_tableValues . ") values (" . $insertParamsObj->WA_dbValues . ")";
die("SQL: ".$WA_Sql."<br /><pre>".var_dump($_POST)."</pre>");
this will write the insert SQL and the form values to the screen, please post this information back.