fields - a list of fields that this function is dependent on. When these fields are modified, the calculation will update its result.
The optional fields parameter is a list of fields this calculation is dependent on. If a necessary field isn’t listed, modifying that dependent field won’t update the result of the calculation.
Evaluate(TextField) returns
4 when TextField contains 2 + 2.
Evaluate("textfield") returns
2 + 2 when textfield contains 2 + 2.
Evaluate(GetField("textfield")) returns
4 when textfield contains 2 + 2.
Evaluate(TextField;[Amount]) returns
.80 when TextField contains .08 * Amount and the Amount field contains 10.00.
Evaluate(“Let(TaxRate=.05;“& Tax Rate Calculation &“)”) returns
.50 when the field Tax Rate Calculation contains SubTotal * TaxRate where SubTotal is a numeric field that contains 10.00.
The following example shows how to pass named parameters using the Evaluate,
Let, and
Get(ScriptParameter) functions, allowing access only to variable
“a” (the example returns
6):
The following example shows how to pass named parameters, allowing access to both variable “a” and
“b”. The simplified first parameter makes the second parameter more complex (the example returns
6, 12):
Note The Evaluate function evaluates an expression, including field values to be evaluated as a calculation formula. It also allows you to specify field dependencies so that a calculation using the evaluation function can be triggered due to changes in other fields of the same record. This function evaluates user-defined formulas. For example, you can create a formula in the Total field that computes state tax:
The Evaluate function has an optional second parameter, which is a field the calculation is dependent on. When the dependent field contents change, FileMaker Pro re-evaluates the calculation. In the following example, the Total calculation will be re-evaluated when SubTotal changes: