Engraving
In order to add a max character length for a product:
Poshify Utils → Select Product:
Namespace: engraving
Key: max_length
Value: whatever you want the maximum character limit to be.
Or, on the product in the admin, it can be put there
NOTE: spacing counts as characters. For example, this product the engraving limit is actually 10. I love you mama = 10. With spaces counted, it equals 15.