Hi Alexis Perez,
We suggest you to convert the decimal value from the CurrencyTextBox into a double and storing the resulting value in your double variable. Please refer to the attached sample and code snippets for your reference.
CodeSnippets:
double doubleVariable = (double)this.currencyTextBox1.DecimalValue;
sfNumericTextBox1.Value = doubleVariable;
Regards,
Bagavathi Perumal A
Attachment:
CurrencyTextBoxWF_b89219af.zip