Parameter Data Types

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The following data types are supported for method parameters:

· String

 

· Boolean

 

· Date

 

· Double

 

· Long Integer

 

· Variable

Use Long Integer for integer numeric values. Use Double for non-integer numeric values.

Use Variable only in combination with the InList parameter mode.

The following rules are applied for boolean values used by components:

· Numeric input values other than 0 are converted to boolean True.

 

· 0 input value is converted to boolean False.

 

· 'N' input value is converted to boolean False.

 

· 'Y' input value is converted to boolean True.

 

· For any other input value an error message is generated.

If you use COM, the parameters that can have a NULL value must be defined as VARIANT in the source code. This is, for example, the case with the parameters of the QueryExe method of a table component.