+ sign question in Axint 4GL ThinClient

[Syed Shahul Hameed Mustaffa]

Dear Gurus,
 I have an application migrated from PH/MPEIX to AXIANT4GL/WINDOWS
(ThinClient).
 I have a field in a screen that accepts -/+ (Minus and Plus).
It works well in MPEIX.
But in axiant, i could not enter + sign. But - (minus), I could.
 Is there any special meaning for +? I am getting an information message
like 'Popup is not permitted for this field'.
 Can anyone please give me some idea about this issue?
 I'll appreciate any effort to address my issue.
 Regards,
SYED
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