I've been scratching my head on this one for the past couple of days and wonder if anyone can help? I've seen a couple of similar queries here but when I've tried to implement the results I've not had any luck. 

I'm trying to set the default value of a fee field to 150 when the loan type and loan purpose meet specific criteria, so far I've had no luck! 

Below is what I've tried using most recently. 

var Application = CRM.FindRecord('application',Value('appl_applicationid'));
var loanType = CRM.GetContextInfo("Application","appl_loantype");
if (Application.appl_loan_purpose == 'Purchase' && loanType == 'Buy')
{
	DefaultValue = 150;
}
else
{
	DefaultValue = 100;
}

Thanks! 

James.