Let, Set, Section Problem!

Monday 24 November 2003 1:31:31 am

This is a simple code:

{let a=1}
{section name=Index loop=5}
{set a=10}
{$a}<br>
{/section}
{/let}

========>result:
1
1
1
1
1

But:
{let a=1}
{set a=10}
{section name=Index loop=5}
{$a}<br>
{/section}
{/let}
=======>result:
10
10
10
10
10

I don't know why two above results are different?
Thanks,
Phi