You can use the <var> task of AntContrib or using <script> and
project.setProperty() 
to override an existing one.

BUT

you should think about your buildfile: the buildfile should describe your
build
process on a higher level than
if-that-is-true-do-this-else-that-and-in-case-of-... 
Keep in mind that Ant is not a functional programming language - never
designed for that :-)


Jan

> -----Urspr�ngliche Nachricht-----
> Von: James Fuller [mailto:[EMAIL PROTECTED]
> Gesendet am: Freitag, 25. Februar 2005 15:45
> An: Ant Users List
> Betreff: Re: ant property
> 
> Rajiv Jaitly wrote:
> 
> >++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> >Please read the disclaimer at the bottom of this e-mail.
> >++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> >
> >Hi,
> >
> >Is there any was in Ant to reset (assign a new value) a 
> property that was set previously ? As i understand ant 
> properties are immutable, I do not want to set up a new 
> property name every time i want to change the value.
> >  
> >
> maybe you could briefly describe your specific scenario....we 
> might be 
> able to suggest a solution with immutable properties that in the long 
> run is perhaps more applicable....
> 
> gl, Jim Fuller
> 
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