Matlab R2017a didn't recognize LTE toolbox function

Hello,

I installed LTE System Toolbox on Matlab R2017a. Matlab didn't recognize this toolbox commands. For Example, When I call LteResourceGrid command from command window I came across

 Error: using LteResourceGrid (line 11)The function call resulted in an error: LteResourceGrid has been removed, use lteResourceGrid instead.

So I used lteResourceGrid command. Unfortunately, Matlab couldn't find lteResourceGrid.m But I saw that lteResourceGrid.m was present on this path: C:\Program Files\MATLAB\R2017a\toolbox\lte

I'm confused. How could I overcome of this problem?

Could you help me please?