[Plugin: The Welcomizer] Database not updating?

Does anyone understand why the new field ‘on_event’ is not added to the table?

Thanks for your help.

https://www.ads-software.com/extend/plugins/the-welcomizer/

————–
twiz-index.php
————–

/* Database version check */
function twizUpdateDbCheck() {

$myTwiz = new Twiz();

if( get_option(‘twiz_db_version’) != $myTwiz->dbVersion ){

$ok = $myTwiz->install();
}
}

/* dbversion check */
add_action(‘plugins_loaded’, ‘twizUpdateDbCheck’);

————-
twiz.class.php
————-

const F_ON_EVENT = ‘on_event’;

function install(){

global $wpdb;

$sql = “CREATE TABLE “.$this->table.” (“.
self::F_ID . ” int NOT NULL AUTO_INCREMENT, “.
self::F_SECTION_ID . ” varchar(22) NOT NULL default ‘”.self::DEFAULT_SECTION.”‘, “.
self::F_STATUS . ” tinyint(3) NOT NULL default 0, “.
self::F_LAYER_ID . ” varchar(50) NOT NULL default ”, “.
self::F_ON_EVENT . ” varchar(15) NOT NULL default ”, “.
self::F_START_DELAY . ” int(5) NOT NULL default 0, “.
self::F_DURATION . ” int(5) NOT NULL default 0, “.
self::F_START_TOP_POS_SIGN . ” varchar(1) NOT NULL default ”, “.
self::F_START_TOP_POS . ” int(5) default NULL, “.
self::F_START_LEFT_POS_SIGN . ” varchar(1) NOT NULL default ”, “.
self::F_START_LEFT_POS . ” int(5) default NULL, “.
self::F_POSITION . ” varchar(8) NOT NULL default ”, “.
self::F_MOVE_TOP_POS_SIGN_A . ” varchar(1) NOT NULL default ”, “.
self::F_MOVE_TOP_POS_A . ” int(5) default NULL, “.
self::F_MOVE_LEFT_POS_SIGN_A . ” varchar(1) NOT NULL default ”, “.
self::F_MOVE_LEFT_POS_A . ” int(5) default NULL, “.
self::F_MOVE_TOP_POS_SIGN_B . ” varchar(1) NOT NULL default ”, “.
self::F_MOVE_TOP_POS_B . ” int(5) default NULL, “.
self::F_MOVE_LEFT_POS_SIGN_B . ” varchar(1) NOT NULL default ”, “.
self::F_MOVE_LEFT_POS_B . ” int(5) default NULL, “.
self::F_OPTIONS_A . ” text NOT NULL default ”, “.
self::F_OPTIONS_B . ” text NOT NULL default ”, “.
self::F_EXTRA_JS_A . ” text NOT NULL default ”, “.
self::F_EXTRA_JS_B . ” text NOT NULL default ”, ” .
“PRIMARY KEY (“. self::F_ID . “));”;

if ( $wpdb->get_var( “show tables like ‘”.$this->table.”‘” ) != $this->table ) {

require_once( ABSPATH . ‘wp-admin/includes/upgrade.php’ );

dbDelta($sql);

$code = update_option(‘twiz_db_version’, $this->dbVersion);
$code = update_option(‘twiz_global_status’, ‘1’);

}else{

if( get_option(‘twiz_db_version’) != $this->dbVersion ){

require_once( ABSPATH . ‘wp-admin/includes/upgrade.php’ );

dbDelta($sql);

$code = update_option(‘twiz_db_version’, $this->dbVersion);
}
}

return true;
}