Hi,

I have shared solution for how to pass inputs to workflow and how to get them in workflow

check this link where I shared the answer

Trouble Accessing variables from inbound action

sharing the script here again

1) Create workflow input variable

2) Then send the data like this

var inc = new GlideRecord('incident');
inc.get('8d44ecd62ff56010aedd55f62799b691');
inc.short_description = 'test';
inc.update();
var wflow = new Workflow();
var wfId = wflow.getWorkflowFromName("Incident") ;

var vars= {};

// you need to set the value in the same column name u_username

vars.u_username = 'my_id_to_workflow';

wflow.startFlow (wfId, inc, inc.operation() , vars) ;

3) Then access it like this

// u_username is the column name which you need to use to access the value

gs.info("workflow value"+ workflow.inputs.u_username);

Regards
Ankur