The Set tag is used to put some value in a variable. The variable, if not already present, is created.
(This tag is the counterpart of Show tag which is used to display set variables)
The following example will create a variable called 'greeting' and set its value to 'Hello'
<cms:set greeting='Hello' />
The following will create another variable known as 'message' and set its value to 'Hello'
<cms:set message=greeting />
As with all other tags, nested tags may be used in parameters (taking care to use double quotes).
The following will set the value of 'message' to 'Hello World'.
<cms:set message="<cms:show greeting /> World" />
A valid variable name starts with a letter or underscore, followed by any number of letters, numbers, or underscores.
IMP. Set cannot be used to set system variables (i.e. those that begin with prefix 'k_').
The first parameter, as illustrated above, is mandatory and is used to set a named variable to a certain value.
The tag also uses an optional unnamed (i.e. only the value can be provided) second parameter that defines the scope within which the variable will be set.
<cms:set message='hello' scope='global' />
The above is the same as
<cms:set message='hello' 'global' />
Here 'global' defines the scope of 'message' variable
The valid values for this second parameter are -
This tag does not set any variables of its own.