wordpress - Slack Slash Command - Passing custom POST paramater? -

is possible send post data along slash command?

for example, when setting new slash command can set callback url receive post data slack. in case it's

http://example.com/wp-admin/admin-post.php

i writing wordpress plugin, , in order have plugin parse post data need pass along action variable in post data.

action=update_status

... correct action called:

add_action('admin_update_status', function() {     // parse post });

is possible send custom post parameter slash command? maybe like:

/update action:update_status projecta in q/a

i figured out can send action parameter get request so:

http://example.com/wp-admin/admin-post.php?action=update_status

HTPPS