illegal context when range is multiplied

Add tu as a subscript to tv by typing tv[tu.

greg re wrote: Hi, Hope you guys can help. I can print out the range multiplied by some value: Why can't I store the resulting range in the variable?

Because a range is an implicit loop, not an a array of values. Use a vector instead of a range.

Thanks for your answers, guys.

I am using subsript feature suggested by Mike Armstrong, but it still does not work:

LiL is still one thing that keeps formula from being computed.