storing part of string into variable

[nate]

str a.getwintext(win("this Title")) (only partial title)

this is an example of how the whole title might be:
"Always the same 4060005 this text will change bla bla 123 bla" (the number will change too exept for the "40")


I need to take the 4060005 out of str a and store it in str b (no spaces)


Please show me an example of how to do this.




thanks for your quick replys, greatly appreciated