Passing variables to exec function

[salesa]

Hello
I am using fscommand exec function from standalone to open external files on CD. I am also using html text and asfunction. So I have text fieds that have links that call asfunction and fscommand. It sounds complicated but here is the example:

MyTextField.htmlText = "<a href='asfunction:somefunction, openfile.exe'>Click me</a>";
function somefunction (arg) {
	fscommand("exec", arg);
}

This doesn't work, fscommand will only work if I call it like this

fscommand("exec", "openfile.exe");

and not if I pass variables to it

Problem is that I have a lot of links in htmltext and would have to make separate functions for each. Is there a way to lunch exec with variables

thanks