I need insert a hidden attribute input field on the tlp_documet_product_info_display.php but, really I don't know how. Actually I insert the attributes , but I can't made invisibles.

I try find where in the code i can modified the instruction for show the input field , but I'm not found.

This is my customization:

I wil run a script into tlp_documet_product_info_display.php it's made a variable and I want include this value to my order. (produce a name) i try pass the value via hidden input field. using the attribute input field.

The reason: i need see this info when i look the order report

All info will be appreciate
Thanks