Count & Exclude a Field beginning with the same Number

[Daniel1908]

Hello Together, 

I want to count the Material Numbers beginning with 6*, but exclude the ones beginning with  "6TZ8*"

=Count( {<[Price]*={"<=100"},Productkey*={'TH',"LR"},[ReturnLabel.]-={'A','B'}, Material= {"6*"},Material-= {"6TZ8*"}>

This does not work, any ideas?

Thanks in advance. 

Daniel

[Frank_Hartmann]

Maybe like this:

=Count({<[Price]*={"<=100"},Productkey*={'TH',"LR"},[ReturnLabel.]-={'A','B'},Material= {"=if(Wildmatch(Material,'6TZ8*')=1,Null(),Material)"}>}if(Wildmatch(Material,'6*')=1,Material))

[Daniel1908]

The Formula shows OK but my expression afterwards doese not work anymore 

*(1-<[Request]={"*"}>)}[Product Number])