Fixed bug in zModifySettings(): Argument value of type str would cause error. Fixed bug in zSetSurfaceData(): Passing empty string as parameter would cause error when reading ZEMAX's response.
Fixed bug in zModifySettings(): Argument value of type str would cause error.
Fixed bug in zSetSurfaceData(): Passing empty string as parameter would cause error when reading ZEMAX's response.

ng110/PyZDDE,indranilsinharoy/PyZDDE,indranilsinharoy/PyZDDE,ng110/PyZDDE