RES-Reach variables are elements replaced by RES-Reach with the string of the value of the variable before being sent to the Browser and before any RES-Reach tag in which it is contained is processed. Variables can appear within just about any HTML tag, but enhance the power of RES-Reach tags substantially.
Curly brackets indicate that a token, or a sequence of tokens, is a variable which should be expanded by RES-Reach, e.g.
{variable}.
Where naming conflicts can occur, the group name must be included, e.g. {_ENV.variable}.
Variable groups are discussed in detail in section 4.1.1. Current record variables which
reference data table contents must include square brackets as well,
e.g. {[EmployeeRec.EmployeeName]}. If the _REC group name
is required (and there is no good reason that it should be), the syntax is
{[_REC.EmployeeRec.EmployeeName]}.
Variable replacement is performed on the leftmost variable until no more variables remain. Variable replacement is also recursive on all variables except form variables, which are assumed to contain user input. With this exception, it is possible to evaluate the element {{Variable_name}} to the value of the variable whose name is itself a variable value.
Expression evaluation is not supported, i.e. {2*{Variable}} is illegal.