Elmer's ELMERS Early Learners Washable Glue Pen E4050

I am willing to admit that perhaps I got a defective item. I cannot get the glue to come out of the mesh tip. I think this is a great idea, and would love to use it in my preschool class. However, I am hesitant to purchase more because they are more expensive than other glue products, and if it doesn't work it is simply a waste of money. (I had to choose "never" on my profile because I could not get this to work. If it would work I would use several times a week.)