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21 lines
885 B
Markdown
21 lines
885 B
Markdown
The [ENVIRON](ENVIRON) statement is used to temporarily set or change an environmental string value.
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## Syntax
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> [ENVIRON](ENVIRON) stringExpression$
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## Description
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* The stringExpression$ must include the environmental parameter ID and the setting:
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* Using an **=** sign: [ENVIRON](ENVIRON) "parameterID=setting"
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* Using a space: [ENVIRON](ENVIRON) "parameterID setting"
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* If the parameter ID did not previously exist in the environmental string table, it is appended to the end of the table.
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* If a parameter ID did exist, it is deleted and the new value is appended to end of the list.
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* The [_ENVIRONCOUNT](_ENVIRONCOUNT) function returns the number of key/value pairs that currently exist.
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* Any changes made at runtime are discarded when your program ends.
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## See Also
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* [ENVIRON$](ENVIRON$), [_ENVIRONCOUNT](_ENVIRONCOUNT)
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* [Windows Environment](Windows-Environment)
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