Thanks, for the help. It really works!!
I only don't get the reason why the seed declaration has to be placed
outside the while-loop. 

greetings/groeten, Koos Jan Niesink

ingo <ing### [at] homenl> schreef in artikel
<Xns### [at] povrayorg>...
> in news:01c1abbb$9437bf40$667dd383@etnica koos wrote:
> 
> > #declare bubbles = blob
> > {
> >   threshold 0.5
> >   #declare i = 0;
> >   #while (i<50)
> >     #declare S = seed(3415765);
> > 
> 
> Mogge,
> 
> Take "#declare S = seed(3415765);" out of the while loop and put it above

> "#declare bubbles=".
> 
> 
> Ingo
>

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