ExportVariable

Use this command to export the values of variables to an external text file.

Caution: The names of variables in Longview Application Framework to be used in data event triggers are limited to 10 characters. The convention is E_DIMNAME (where DIMNAME is the first 8 characters of the dimension name). In the case where the first 8 characters of the dimension names are the same, the variables are named E_DIMNAME_N (where DIMNAME is the first 6 characters of the dimension, and N is the dimension number).

EXPORTVARIABLE VariableName FileName [APPEND]                

where:

• VariableName is the name of a particular variable.
• FileName is an ASCII file containing the data. It can include a complete or partial folder path in the format C:\...\FileName. If FileName includes spaces, enclose it in double quotation marks; for example:

  @"C:\My Documents\My Data.txt"

  Note: If the document is in the same location as lv_af.exe, you do not need to specify the drive or path. If the path specified does not exist, it will be created. The folder path can have a maximum length of 260 characters.

• APPEND directs the command to place the variable’s value in a new line of an existing text file.

If the named text file does not exist, it is automatically created, even if APPEND is part of the command.

Caution: If the named text file already exists and APPEND is not designated, the existing text file will be overwritten and any data stored in it will be lost.

CREATE VARIABLE X AS STRING
CREATE VARIABLE Y AS NUM
SET VARIABLE X = "YEAR"
SET VARIABLE Y = 2007
EXPORTVARIABLE X Variables.txt
EXPORTVARIABLE Y Variables.txt APPEND                            

See also

• Create Variable
• Set Variable