Java Script for AP20.1

You should be able to do this in FORM_OnAfterTransaction() by using lawForm.setFormValue

I'm new to Lawson and Java. Can you give an example? I tried the function listed below but it doesn't work. Thanks.

function FORM_OnAfterTransaction(fc)
{
if (fc == "M")
lawForm.setFormValue("text7","");
}

Well, your first issue is that 'fc' isn't passed to FORM_OnAfterTransaction, only to FORM_OnBeforeTransaction.

Here's a sample from the Lawson documentation:
function FORM_OnAfterTransaction(data)
{
// was the transaction successful?
if (formState.agsError) return;

// following an add transaction, clear the "_f2" field
var fc=data.getElementsByTagName("_f1");
if (fc && fc.length > 0)
fc=fc[0];
if (fc == "A")
lawForm.setDataValue("GL-COMPANY","");
}

Thanks John,
I'll give it a try.

I get an error when using the data.getElementsByTagName function, so I tried the following:
function setFocus()
{
lawForm.positionInFieldById("text8");
}

function FORM_OnAfterTransaction(val)
{
if(val.selectSingleNode("//_f1").text == "M")// && lawForm.getMessageNbr() == "000")
{
lawForm.setDataValue("API-VENDOR","");
setTimeout("setFocus()", 300)
return true;
}
else
{
setTimeout("setFocus()", 300)
return true;
}
}

It works for me, but not for the user. Any ideas?

I have a "button" that clears part of the form, like the ctrl-shift-k shortcut. I position the cursor first because I want only the "detail lines" cleared.

The button just runs the function below. You could put it in another event though, most likely FORM_OnAfterTransaction(). If so additional code to check what action was taken or it would do it every time (which is maybe what you want anyway).

function ClearForm()
{
lawForm.positionInField("_f66r0");
tranMagic.clearFormData("_f66r0");
}

Gary, I remember this happening in another instance with a client. I think it turned out that the form itself had changed (i.e. the underlying AP20.scr was different) and/or the key numbers which are used to pass the fields from form to form as well as hold the values had changed. In that case, what I had to do was re-implement the form, so that Lawson would regenerate the XML, and then re-apply my customizations.