How to copy a payment plugin?

So, I need 3 additional copies of the western union or bank transfer plugin.

I don´t have much programming knowledge but I tried to edit the plugin many times changing the name, type, class, doing different versions of the plugin, and then trying to install them through the joomla extension path.

Well I give up, there is always some code conflict that appears after instalation, sometimes in the backend, other times on the frontend.

For example, I attached one version of the western union payment plugin edition:

I get an error on the back end:

Fatal error: Call to a member function display() on a non-object in /plugins/hikashoppayment/western2/western2_configuration.php on line 17

Which is:

<td>
<?php echo $this->data->display("data[payment][payment_params][order_status]",@$this->element->payment_params->order_status); ?>
</td>

If I delete that line I can access the backend, but then I get an error on the frontend

Fatal error: Cannot redeclare class plgHikashoppaymentWesternunion in /plugins/hikashoppayment/western2/western2.php on line 118

Which is the last line of:


$information = $method->payment_params->information;
if(preg_match('#^[a-z0-9_]*$#i',$information)){
$information = JText::_($information);
}
$currencyClass = hikashop_get('class.currency');
$amount = $currencyClass->format($order->order_full_price,$order->order_currency_id);
$order_number = $order->order_number;
require($path);

return true;
}
}

Can someone give me some step by step process to have the westernunion or banktransfer plugin copied 3 more times?

Thank you

you guys are really awesome!