Osascript to open a new tab with concurrently

alias.sh

#!/bin/bash

export TEST_LINK="http://localhost:1234/blah"

alias startsplit='osascript -e "tell application \"Terminal\" to activate" -e "tell application \"System Events\" to tell process \"Terminal\" to keystroke \"t\" using command down" -e "tell application \"Terminal\" to do script \"~/source/project1/script/server\" in selected tab of the front window" & concurrently -n proxy,project2,chrome -c grey.dim,blue.dim,grey.dim,magenta.dim "~/source/project1/script/proxy start" "~/source/go/src/github.com/project2/script/server" "open -na \"Google Chrome\" --args --incognito \"$TEST_LINK\""'