Can't match two input in when?

[Acring]

hi, I went to use two class to activate a rule but it seems don't work anyway.

part of the code is like :

rule "should never get here":
        agenda-group "test_d"
        when:
            $lineB := Line()
            $pointA := Point()
        then:
            bar()

and error is

Traceback (most recent call last):
  File "D:/CODE/Python/Test/firstapp/Intellect_test/Intellect_test.py", line 25, in <module>
    policy_d = myIntellect.learn(Intellect.local_file_uri("./rule.policy"))
  File "C:\Python27\lib\site-packages\intellect-1.4.9-py2.7.egg\intellect\Intellect.py", line 190, in learn
    return self.learn_policy(identifier)
  File "C:\Python27\lib\site-packages\intellect-1.4.9-py2.7.egg\intellect\Intellect.py", line 247, in learn_policy
    file_node = parser.file()
  File "C:\Python27\lib\site-packages\intellect-1.4.9-py2.7.egg\intellect\grammar\PolicyParser.py", line 245, in file
    statement1 = self.statement()
  File "C:\Python27\lib\site-packages\intellect-1.4.9-py2.7.egg\intellect\grammar\PolicyParser.py", line 338, in statement
    ruleStmt4 = self.ruleStmt()
  File "C:\Python27\lib\site-packages\intellect-1.4.9-py2.7.egg\intellect\grammar\PolicyParser.py", line 975, in ruleStmt
    object.append_child( then26 ) 
  File "C:\Python27\lib\site-packages\intellect-1.4.9-py2.7.egg\intellect\Node.py", line 152, in append_child
    raise TypeError("Parameter 'child' cannot be None.")
Exception: line 46:12 mismatched input u'$pointA' expecting DEDENT

may i wrong? or it don't support this kind of syntax? thanks!!