Question about creat OTT blcoks

Dear all

I have followed the tutorials about how to create the OTT blocks in python, and all process sounds good. However, the block cannot appear in my GNU radio.

I also edit the config.conf in /etc/gnuradio/conf.d/grc.conf and add

[grc]  local_blocks_path=/usr/local/share/gnuradio/grc/blocks

However, it`s still not working, I`m not sure why. Could someone help me to solve this problem? Thank you very much!

Philip

Best Regards