Make lasso the active tool trough javascript

Hello,

ok, i know almost nothing about javascript but i am trying to collect some javascripts from the net to use as actions.

i am using some scripts in photoshop as actions. What i want to do is use the lasso tool in between actions. But i cant make yhe lasso tool the active tool trough actions forcing me to select it manually.

does anyone know if you can do this with a simple script?

Another problem is that i dont know how to set a brush hardness to 0% with script.

What i would also like to know is if it is possible to make a select all function in the active textlayer..

The internet isn't really helpfull with these questions. I hope someone could help me with this

thanks in advance for helping!