vars.put("stringVar", "azerty");
ProcessInstance processInstance3 = runtimeService.startProcessInstanceByKey("oneTaskProcess", vars);
// Test EQUAL on single string variable, should result in 2 matches
ExecutionQuery query = runtimeService.createExecutionQuery().variableValueEquals("stringVar", "abcdef");
List<Execution> executions = query.list();
Assert.assertNotNull(executions);
Assert.assertEquals(2, executions.size());
// Test EQUAL on two string variables, should result in single match
query = runtimeService.createExecutionQuery().variableValueEquals("stringVar", "abcdef").variableValueEquals("stringVar2", "ghijkl");