Number of target in SSVEP scenario

[lezan]

Hi guys,
I have some problems with SSVEP scenario.
I am trying what I can do with MindSet device of NeuroSky. I know that it is not the best BCI for SSVEP but I need to test this for my thesis.
So, I manage the SSVEP scenario only with two frequency and only two box. In ssvep-bci-2training-acquisition scenario I see only two squares but it works as if there were three squares and three frequencies (I see it on prompt).
The isssue on screenshot.
Thanks for your answers.

[lezan]

Anyone have some tips?

EDIT:
Okei, I solved the problem. I changed the Goal sequence by eliminating the number 3.