[JEXL] if statements, assignments

[Vincenz Braun <vb...@evelox.de>]

Hello,

i searched the jexl parser and documentation (sources :) for proper use
of if statements and variable assignments.

I tried:

${if (myDate != null) formatter.format(myDate) else ''}
${if (myDate != null) formatter.format(myDate); else '';}

${myVar = 'TestString'}
${myVar = 'TestString';}

All resulting in invalid expression exceptions:

What is wrong in my code?

Thanks in advance,
Vincenz