View this page in the latest version of Appian. Define a Simple Currency Component Share Share via LinkedIn Reddit Email Copy Link Print On This Page Tip: Interface patterns give you an opportunity to explore different interface designs. Be sure to check out How to Adapt a Pattern for Your Application. Goal Show a text field that allows the user to enter dollar amounts including the dollar symbol and thousand separators, but save the value as a decimal rather than text. Additionally, always show the dollar amount with the dollar symbol. This scenario demonstrates: How to configure an interface component to format a user's input Expression 1 2 3 4 5 6 7 8 9 10 11 a!localVariables( local!amount, a!textField( label:"Amount in Text", /* Instructions show the saved datatype*/ instructions: "Type of local!amount: " & typename(typeof(local!amount)), value: if(isnull(local!amount), "", dollar(local!amount)), /* Instead of saving the value as text, a!save() is used to store to the desired datatype*/ saveInto: a!save(local!amount, todecimal(save!value)) ) ) Test it out Enter $12345 and click away from the field. Notice that the text box shows $12,345.00 and that the saved value is a decimal. Enter $12,345.23 and click away from the field. Enter a1b2c3 and click away. Notice that the text box removes the non-numeric characters and treats the remaining as a decimal value. A true currency component would catch this as an error case, hence why this is called a simple currency example. Notable Implementation Details Because dollar() will not accept a null value, we set the value conditionally until local!amount has a value Feedback Was this page helpful? SHARE FEEDBACK Loading...