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# LogiView

## Function 'client_env'

| The result of a 'client_env' function is the value of a client environment variable.
| After calling a modal widget (including LogiView application forms) this function can only work correctly after returning to the main event loop. Therefore, it may be best to execute this function at the beginning of a LogiView application and before calling LogiView application forms or a userexit.
| ### Syntax:
| {STR_VAR}= client_env ({STR_EXPR})
| ### I/O parameters:
| {STR_EXPR} | Name of the client environment variable.
| - |
| ### Return value:
| {STR_VAR} | String contains the value of the environment variable.
| ### Example:
| Declaration of Variables
| 10 DOCU_STRING_1=client_env("PATH") 20 put(DOCU_STRING_1) Result:
| Functions and commands: Operating System Interface