chaining commands in a key binding

I want to run my calendar command and then go into copy mode in
order to scroll up and down the pasted calendar.

This binding puts me directly into copy mode and only when copy mode exits does the `gcalcli' command execute.

How do I change the sequence?
bind D eval colon 'stuff "! gcalcli calw 4 ^M    "' copy

I am replacing this command that worked fine.
#eval exec "gcalcli calw 4" 

-- 
Eric Smith