I have Troubles with this page i opened the "File Attachment Test page but none of the buttons has any peoplecode i tried placing one buttons just like those and didn't work.

Can you help me more please

You can try out this Code:

Write the code in FieldChange event:

Component string &FileUploaded;
Local string &UPDATE = "Y";

SQLExec("SELECT ATTACHSYSFILENAME FROM %table(CSGC_CSHT_ATACH) WHERE LASTUPDOPRID = :1", %OperatorId, &OldFileName); /* Get the previous file name */
&RETCODE = AddAttachment("RECORD://CSGC_CSHT_ATACH", &ATTACHSYSFILENAME, "", &ATTACHUSERFILE, 0);

Evaluate &RETCODE
When = 0 /* Returns Zero, when user clicks on OK with the valid File Path */
/* Then Check whether the file is only .txt file or not, if not throw an error msg and delete the file */
If Lower(Right(&ATTACHUSERFILE, 4)) <> ".txt" Then
MessageBox(0, "", 27333, 44, ""); /* You can only upload .txt files. */
&RETCODE1 = DeleteAttachment("RECORD://CSGC_CSHT_ATACH", &ATTACHUSERFILE); /* Delete file */
&FileUploaded = "N";
&UPDATE = "N";
End-If;

SQLExec("SELECT COUNT(1) FROM %table(CSGC_CSHT_ATACH) WHERE LASTUPDOPRID = :1", %OperatorId, &Count); /* Check whether any rows are there in Attachment Record or not */

If &Count > 1 Then /* means more than one record is existing, So Delete the previous file */
&RETCODE2 = DeleteAttachment("RECORD://CSGC_CSHT_ATACH", &OldFileName); /* Delete file */
End-If;

If &UPDATE = "Y" Then
&UpdatedFileName = %OperatorId | "_" | &ATTACHUSERFILE;
SQLExec("UPDATE %table(CSGC_CSHT_ATACH) SET ATTACHSYSFILENAME = :1 WHERE LASTUPDOPRID = :2", &UpdatedFileName, %OperatorId);
&FileUploaded = "Y";
End-If;

Break;
When = 11 /* Returns 11, when user clicks on OK without File Path */
When = 2 /* Returns 2, when user clicks on CANCEL Button */
MessageBox(0, "", 27333, 67, ""); /* Please Specify the path and upload again. */
&FileUploaded = "N";
Break;
End-Evaluate;

I am getting the below error while attaching a file. Please help.

CAN NOT LOCATE DESTINATION SYSTEM