Visual Basic for Applications Reference
The Let statement syntax has these parts:
|Let||Optional. Explicit use of the Letkeyword is a matter of style, but it is usually omitted.|
|varname||Required. Name of the variable or property; follows standard variable naming conventions.|
|expression||Required. Value assigned to the variable or property.|
A value expression can be assigned to a variable or property only if it is of a data type that is compatible with the variable. You can't assign string expressions to numeric variables, and you can't assign numeric expressions to string variables. If you do, an error occurs at compile time.
Variant variables can be assigned either string or numeric expressions. However, the reverse is not always true. Any Variant except a Null can be assigned to a string variable, but only a Variant whose value can be interpreted as a number can be assigned to a numeric variable. Use the IsNumeric function to determine if the Variant can be converted to a number.
*Caution* Assigning an expression of one numeric type to a variable of a different numeric type coerces the value of the expression into the numeric type of the resulting variable.
Let statements can be used to assign one record variable to another only when both variables are of the same user-defined type. Use the LSet statement to assign record variables of different user-defined types. Use the Set statement to assign object references to variables.