Javascript variable value into abap variable

Hi Experts,

In .htm page i'm using javascript function, in which i want to get the data from javascript variable into an abap variable. Please let me know your inputs.

below is the example.

data : v1 type string.
function radio1(value1)
{
var sel;
sel = value1;
how to get the value of variable "sel" into abap variable "v1".
}

Thanks & Regards,
S.Gangireddy