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# lr.eval_double

Returns the double value of the parameter.

## JavaScript

    function lr.eval_double(  param_name  )

## VBScript

    Function lr.eval_double(  param_name  )

String and Parameter Functions

## Arguments

Name | Comments
--- | ---
param_name | The parameter to evaluate.

The lr.eval_double function returns the value of the parameter as a double

## Return Values

Returns the value of the parameter as a double.

## Parameterization

All input arguments can be parameterized using standard parameterization.

## Example

In the following example, save_double createsparameter`twenty_two` and eval_double saves the value to a Double variable and outputs the value using output_message.

Copy code

    Dim dVal as Double
    lr.save_double "twenty_two", 22
    dVal = lr.eval_double ("<twenty_two>")
    lr.output_message "The value of variable dVal is " _
        + Cstr(dVal)
    lr.output_message "The value of parameter twenty_two is " _
        + Cstr(lr.eval_double ("<twenty_two>"))

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