Change size of custom multi select field

[Lara Krefski]

I followed the directions in this article and pasted the script in the Description field of my custom field. It didn't change the size of the field and only displayed the script below the field. Please tell me what I am doing wrong.

Thank you.

[mfabris]

@Lara Krefski 

Most probably you have to enable HTML in the fields description.

(Seetings/General Configuration)