Deleting , from product title

Hello there,

I have products in my feed that appear in my Facebook catalogue as “<b>Product name</b>”. I am trying to delete the <b> and </b> signs by using the Feed filters and rules – I create a rule indicating that if in ‘Product name’ there is a ‘<b>’ then ‘product name’ is ‘-‘

Unfortunately it doesn’t change my feed. What am I doing wrong?