/**
* Sets the value of a variable. The variable must exist beforehand.
*
* @param name name of the variable.
* @param val the initial value of the variable.
* @throws NullPointerException if the variable has not been previously created with {@link
* #addVariable(String,Object)} first.
* @since 2.3.0 alpha
* @since April 05 - throws an exception if variable unset.
*/
public void setVarValue(String name, Object val) {
symTab.setVarValue(name, val);
}
