There are some properties on JasperReports that need to have dynamic values, e.g:
It would be a very useful feature to add Text Field Expression to this properties and several other String properties.
Yes, this would be useful.
But it's not an iReport feature. Please log this on the JasperReports tracker.
You are certainly right, my bad, I've already posted it in JasperReports tracker.
Thanks for the observation