Login to mobaxterm SSH through TCL/tk scripting

I tried to login to SSH from the tcl/tk gui. I have the following code in tcl/tk,

button $a.b1 -text "Connect-Check" -command \
{exec "C:/Program Files (x86)/Mobatek/MobaXterm/MobaXterm.exe" "$dir/connect-check.ttl"}

commands inside the 'connect-check.ttl' file is,

connect '10.241.18.10:22 /ssh  /V /auth=password /user=***username*** /passwd=***password***'

when I Execute the code I get the following error in Mobaxterm,

Could someone help me with this error, or is there a better way to access the SSH.

Thank you!