eliminate {}

[stewang]

Hello all:

I 'd like to ask a question that how to eliminate the { } from a string.
For example,
a string like { how are you }
I'd like the result like as following
how are you
I tried the command like
set string " { how are you } "
set data [ split $string "{" ]
set data1 [ split $data "}" ]

but it doesn't work

Could anyone help me, please

rgds
stewang

 

[stewang]

Hello:
Thanks for you came here, I known how to do already.