What is the version of xEdit you are using?
FO4Edit 4.0.3 (819FA7E8) starting session 2021-08-22 07:11:29

Describe the bug
xejviScriptAdapter.pas
line 2121 AddFunction(cUnit, 'GetNewFormID', IwbFile_GetNewFormID, 0, [varEmpty], varEmpty);

contradicts the documentation on the page https://tes5edit.github.io/docs/13-Scripting-Functions.html
regarding the function GetNewFormID

To reproduce
Steps to reproduce the behavior:
Run the script
`unit userscript;

const
sNameElement = 'FULL - Name';

function Initialize: integer;
var
i, loadOrder: integer;
eFile: IwbFile;
sFName, sHexLO: string;
begin
for i := 0 to FileCount - 1 do begin
eFile := FileByIndex(i);
if Assigned(eFile) then begin
loadOrder := GetNewFormID(eFile);
sHexLO := IntToHex(loadOrder,8);
sFName:= GetFileName(eFile);
AddMessage(sFName + ' has the load order ' + sHexLO);
end;
end;
end;

end.`
And it reports
[00:00] Exception in unit line -1: Error in unit 'userscript' on line 15 : Too many actual parameters

Expected behavior
It should return the new FormID

Additional context
GetLoadOrder is also bugged with FO4edit when there are esl files.