Wildcard problem

Hello,

<xsl:value-of select="count(*[starts-with(name(),'WAAUX')])"/>

I would like to count each element that starts with a 'WAAUX' then any
two digit numbers and rest doesn't matter.

e.g.

WAAUX02xxx	-> should be counted
WAAUXCallerID -> should NOT be counted
WAAUX04xxx	-> should be counted


I guess I need to use concat('WAAUX', ... ) within the count above.
But can I use a star as wild card in this case?


Any idea?

Many thanks
Houman