The value specified for an environment variable cannot be longer than 255 characters. If an environment variable has more than 255 characters, create multiple assignment statements for the variable and select Append in the Action field to create a single statement. The environment variable whose values you want to append together must belong to the same environment.
The following figure shows multiple assignment statements for the PATH environment variable.
The following code example shows the combined value for the PATH environment variable.
PATH = /bin:/usr/bin:/usr/local/bin:/opt/cobol/bin