java - Activiti Process Updated Variable value is not getting persisted in DB -

i'm trying update process variable after starting process when starting activiti, pass random string value variable need update variable value afterwards.

system.out.println(runtimeservice.getvariables(executionid));             runtimeservice.setvariable(executionid, varname, varvalue); system.out.println(runtimeservice.getvariables(executionid)); 

and output

variableone : "randomvalue" variableone : "updatedvalue"

but when documentation of task documentation

the variable value ${variableone}

i output

the variable value randomvalue

instead of

the variable value updatedvalue

the problem execution id not same process instance id. need update variable against process instance id rather execution id.

cheers, greg