need launcher syntax help with caplock key killer

[Todd And Margo Chester]

Hi All,

I care not for the Cap Lock key.  I can kill it from the command line
using the following:

setxkbmap -layout "$(setxkbmap -print | awk -F + '/xkb_symbols/ {print 
$2}')" -option ctrl:nocaps

But not from a launcher icon (KVM tends to turn it back on, so I made
an icon to turn it back off).  I have been copying and pasting it from
the launcher to an xterm.

So, I figure there is some ".desktop" syntax convention I am missing.
Anyone know what that is?

Many thanks,
-T