how to set gateway constraints

[casey_0708]

hello, I use the xor gateway.but i don't know how to set the constraints on the sequence flow in the web designer.

thx.

[roxy1987]

To use a xor gate, you need to select the xor gate, click on constraints field in the property view. You will see a pop up like this :

Click on edit. You will get another pop up like below :

Variable is a process variable. You can set its value before the xor gate in the flow is reached.

You can set a value similarly in the other constraint as well. Which ever value is matched, it will be returned.

[casey_0708]

hello Shobhit,

thanks for your replying,but I don't use the eclipse to design. I use the drools-guvnor to design.it is said that I should edit the constraints on the sequence flow.

after I edit the constraints using "return i<10;",then start the instance in the jbpm-console.it returns error.

the error says " Exception when trying to evaluate constraint i<10 split".

do you know how to fix it ?

thx.

[swiderski.maciej]

make sure you have value assigned to 'i' process variable and make sure you have defined process variable.

HTH

[casey_0708]

thanks Maciej,

i have defined process variable,but it still returns error .

is there any way to solve?

[kornilovs]

Create package: test_mail_files

create bpmn2 diagram: test_mail

import schema

There is variable "approv" type String. For constraint use java.

For start in jbpm-console

add EmailWorkItemHandler to console-server

generate forms

build package

[casey_0708]

thanks Sergey

i have resolved this problem.I use kcontext.setVariable to set the value