java - How to send mail throw BPMN 2.0 with Camunda? -

i try send mail bpmn 2.0 , not delegatetask or listener.

i tried :

<bpmn2:servicetask id="servicetask_1" name="mailservice" camunda:type="mail">   <bpmn2:extensionelements>     <camunda:field name="to" stringvalue="test@test.com" />     <camunda:field name="subject" expression="hello" />     <camunda:field name="html" expression="hello" />    </bpmn2:extensionelements> </bpmn2:servicetask> 

but fail :

caused by: org.camunda.bpm.engine.classloadingexception: not load class: org.camunda.bpm.engine.impl.bpmn.behavior.mailactivitybehavior     @ org.camunda.bpm.engine.impl.util.reflectutil.loadclass(reflectutil.java:85)     @ org.camunda.bpm.engine.impl.util.reflectutil.instantiate(reflectutil.java:147)     ... 43 more caused by: java.lang.noclassdeffounderror: org/apache/commons/mail/emailexception     @ java.lang.class.forname0(native method)     @ java.lang.class.forname(class.java:270)     @ org.camunda.bpm.engine.impl.util.reflectutil.loadclass(reflectutil.java:65)     ... 44 more caused by: java.lang.classnotfoundexception: org.apache.commons.mail.emailexception 

i've add mail-1.5.0.jar, commons-emails-1.2.jar , commons-logging-1.jar $camunda_home/server/apache-tomcat-*/lib.

i work camunda 7.1.0-final on tomcat server.

in lib folder did add commons-emails-1.2.jar etc?

if copied them lib folder in $camunda_home (the directory start-camunda.sh file exists) please move them lib folder of application server (e.g. $camunda_home/server/apache-tomcat-7.0.50/lib/).