Problem with textbox size

Hello everyone,
I'm trying to make my first my_visual_database project. It doesn't seem as difficult as I thought, but I came across one problem that I'm trying to fix.
I put some textboxes in the form. I set these sizes for some of them:

width 560
height 32
and
width 560
height 101 (it's a textbox for large imput);

but when I run the project to check the result, the height sizes are much smaller, say, the original size as if I hadn't modify them in the options
Can you help me, please?
John.