I use Apache Velocity for create an e-mail template.
I have a mail message that contain a table with a list of elements, for create it I had used a #foreach.
In this table I'll add a column contained a conditional string, If the element is empty the string are string1 if is not empty are string2.
This is my code:
 #foreach( $item in $list )
        <td style="max-width: 140px; word-wrap: break-word;">
        #if(${value} not null) 'String1' #else 'String2'#end</td>
 #end
Error log:
 org.apache.velocity.runtime.parser.ParseException: Encountered "null" at line 25, column 131. Was expecting one of:
    "[" ...
    "{" ...
    "(" ...
    <STRING_LITERAL> ...
    "true" ...
    "false" ...
    <INTEGER_LITERAL> ...
    <FLOATING_POINT_LITERAL> ...
    <IDENTIFIER> ...
    "{" ...
    "[" ...
        at org.apache.velocity.runtime.parser.Parser.generateParseException(Parser.java:3679)
I don't find any help in stack... anyone can help me?
 
                        
I think this can run in your case:
Try to read this question