Thank you for your input.
Here are some more details now that the game is finished.
The player involved is Chris Cooley, awareness 94.
My strategy level is 3, the OC is Richard Williamson, strategy level 5 and the WR Coach is Paul Hackett, strategy level 2.
I have now tried "slant in" twice, 'in' once, "curl" once and "block right" once. It only worked when I told him to block. The other 4 times he squared into the flat at about 3 yards.
Hmmm.....
I'm about to increase my strategy level to 4 and it would be easy enough to bring Hackett up to 3, I'll see if it ever works on this play.
I guess I can edit the play each time and then not keep it. A bit more time consuming. It looks like I get to keep my play knowledge for one repetition but I don't know that for sure.