
If the value refers to a column name, then the new column must be the same type
as the column that it replaces. For example, if V1 is a numeric type column, then
the column name that you specify must also be numeric.
When the value is a column name, the case of the string value does not matter.
For example, V1="Weight" is effectively the same as V1="WEIGHT". When the
value resolves to text that appears in the graph (for example, titles and axis
labels) the value entered is case-sensitive.
Details
When you use dynamic variables, be aware that some variables must be initialized,
whereas for others, initialization is optional. For example, suppose ...