I have a Report which i want to check on if a certain field on the SalesLine table is filled, if so, show the value of this field.

I have 2 custom tables which the report is using.

`Table A` & `Table B`

`Table A`, has a method with the following query:

```
select firstonly Id from TableB
        where TableB.Id == this.Id;
return TableB.Id;

```

`Table B`, has a method with the following code:

```
public SalesLine salesLine()
{
    return SalesLine::findInventTransId(this.InventTransId);
}

```

Now I need to check on the report, throughout these 2 methods, if `Field X` on the Sales Line table is filled. How can I accomplish this?