ri! in the rule, 
hours, index
=a!gridRowLayout(
  id: ri!index,
  contents: {
    a!textField(
      label: "project " & ri!index,
      value: if(rule!PX_LI_IsEmpty(ri!hours),null,if(rule!PX_LI_IsEmpty(ri!hours[ri!index]),null,ri!hours[ri!index].project)),
      saveInto: ri!hours[ri!index].project
    ),
    
    a!textField(
      label: "role " & ri!index,
      value: if(rule!PX_LI_IsEmpty(ri!hours),null,if(rule!PX_LI_IsEmpty(ri!hours[ri!index]),null,ri!hours[ri!index].role)),
      saveInto: ri!hours[ri!index].role,
      readonly: true
    ),
    
        
    a!dateField(
      label: "date " & ri!index,
      value:ri!hours[ri!index].date,
      saveInto: ri!hours[ri!index].date,
      readonly: true,
      validations: {if(rule!PX_LI_IsEmpty(ri!hours),null,if(rule!PX_LI_IsEmpty(ri!hours[ri!index]),null,if(rule!PX_LI_IsBlank(ri!hours[ri!index].date),null,if(todate(ri!hours[ri!index].date) > today(), "The due date cannot be in the future", null))))},
      align: "RIGHT"
    ),
    a!integerField(
      label: "hours " & ri!index,
      value: ri!hours[ri!index].hours,
      saveInto: ri!hours[ri!index].hours,
      readonly: true,
      validations: null,
      align: "RIGHT"
    ),
    
    a!textField(
      label: "user " & ri!index,
      value: ri!hours[ri!index].user,
      saveInto: a!save(ri!hours[ri!index].user, user(loggedInUser(), "username")),
      readonly: true,
      align: "RIGHT"
    ),

    a!textField(
      label: "status " & ri!index,
      value: if(rule!PX_LI_IsEmpty(ri!hours),null,if(rule!PX_LI_IsEmpty(ri!hours[ri!index]),null,ri!hours[ri!index].status)),
      saveInto: ri!hours[ri!index].status,
      required: true
    )

  }
)