Import CSV-FILE to AX2012 - csv

Question

I am trying to Import a csv-FILE in AX 2012
(Fields: FirstName, LastName, Birthdate, Jerseynumber)
class SYCImportData_Roster
{
}
public static void main(Args _args)
{
SYCImportData_Roster importData_Roster;
;
importData_Roster = new SYCImportData_Roster();
importData_Roster.run();
}
public void run()
{
AsciiIo rosterFile;
SYCu17roster u17RosterTable;
FilenameOpen filenameopen;
container records;
int totalRecords;
#FILE
;
filenameopen = this.dialog();
rosterFile = new AsciiIo(filenameopen, #IO_READ);
if ((!rosterFile) || (rosterFile.status() != IO_Status::Ok))
{
throw error("#SYC71");
}
rosterFile.inFieldDelimiter(#delimiterSemicolon);
try
{
ttsBegin;
while (rosterFile.status() == IO_Status::Ok)
{
records = rosterFile.read();
if (!records)
{
break;
}
totalRecords++;
this.doForEach(records);
}
ttsCommit;
}
catch (Exception::Error)
{
if (rosterFile)
{
rosterFile.finalize();
rosterFile = null;
}
throw error("#SYC70");
}
info(strFmt("#SYC52" + " = %1", totalRecords));
}
public FilenameOpen dialog()
{
Dialog dialog;
DialogField DF_dialogfield;
FilenameOpen filenameopen;
#FILE
;
dialog = new Dialog("Kaderliste importieren");
DF_dialogfield = dialog.addField(extendedTypeStr(filenameopen));
dialog.filenameLookupFilter(['csv' , '*' + #CSV, 'xlsx', '*' + #XLSX]);
if (!dialog.run())
{
throw error("#SYC70");
}
filenameopen = DF_dialogfield.value();
return filenameopen;
}
private void doForEach(container _records)
{
SYCu17roster u17rosterTable;
;
u17rosterTable.clear();
u17rosterTable.FirstName = conPeek(_records, 1);
u17rosterTable.LastName = conPeek(_records, 2);
u17rosterTable.BirthDate = conPeek(_records, 3);
u17rosterTable.jerseyNumber = conPeek(_records, 4);
u17rosterTable.insert();
}
The Error I get:
Error executing Code. Wrong type of Argument for conversion function.
Stack trace
(C)\Classes\SYCimportData_Roster\doForEach - line 10
(C)\Classes\SYCimportData_Roster\run- line 35
(C)\Classes\SYCimportData_Roster\main- line 8
I think it has to do something with the way the Birthdate field ist in my csv file.
Example:
Tom;Richards;28.02.1990;12