How can I get spike data in .mcd file?

HI~
I've just installed MEA tool in MATLAB and tried to analyze MEA data.
It shows that my .mcd file should contain spike data.
However, I analyzed data after recording which means I got spike data in .rck file...
How can I get spike data in .mcd file??

Thx

Hello,
the .rck file contains only the combination of instruments, the rack. Data is always saved in .mcd format. If you use a spike sorter tool, the datastream "spikes" will show up in your recorder, and can be recorded as usual. This is also possible with replayed data.

Best regards Frank MCS

Thank you ^^
I found that I forgot to press recording...