Hello,
I see that this problem is old and has not yet been fixed, see:
http://forum.virtuemart.net/index.php?action=post;topic=99164.0;last_msg=374880
I put the SOLUTION here:
Using Joomla! 3.9.20 and VirtueMart 3.8.4
Open file> root/pligins/vmcustom/textinput/tmpl/default.php
Before the line 13 add:
maxlength="<?php echo $params->custom_size ?>"
It seems that it is not possible to override and I hope it will be fixed in the next version.
I hope you find it useful.
This should be overridable:
/templates/your_template/html/vmcustom/ (https://forum.virtuemart.net/templates/your_template/html/vmcustom/)
Jörgen @ Kreativ Fotografi
Perfect, thanks!
Glad to be of help :)
Jörgen