How can I set from ~ to date to APPLICATION.setVariableValue ?

Hello,

It is possible with APPLICATION.setVariableValue by setting single date, for example: APPLICATION.setVariableValue("ZCIMSCALDAY", "20140701");

I want to set from ~ to date, for example: APPLICATION.setVariableValue("ZCIMSCALDAY", "20140701-20140731");

It does not work.

How can I set from ~ to date to APPLICATION.setVariableValue() ?

Thanks~