Expression logic of ToString

[LiJing]

I am in the middle of the learning course regarding how to create a Macro workflow, 

One step is to add "$" to the fields of amount, and also change the format from XXXXXX.XXXX to XXX,XXX.XX,

I tried the expression as "$"+ToString([_CurrentField_], 2,1) in Fomula tool, but no change to the original form.

My question is:

1. anything wrong with this expression?

2. is there anyway to know the meaning of each Expression, better with an example?

[LiJing]

the workflow can be found here

[ShankerV]

Hi @LiJing 

One way of doing this.

"$"+tostring(Round([Field1],.01))

Many thanks

Shanker V

[FrederikE]

Hey @LiJing

I think question 1. is answered by @ShankerV. 

For question 2. I'd recommend the Alteryx help site - every function is explained there very well - also with multiple examples each: 

General function overview: https://help.alteryx.com/20231/designer/functions

Conversion functions: https://help.alteryx.com/20231/designer/conversion-functions

[LiJing]

Thanks for your solution, Shanker V.

Sorry for the late response, still in the middle of monthly closing and budget planning.

now I got to know how to use Tostring, but still I have 2 more questions, 

1. what does each field mean under "variables", where can I find the definition?

2. I tried to save the created Macro, but when I try to open it in a workflow, there is not input/ output button, would you have any idea about this?

[jdminton]

@LiJing you're using a multifield formula tool. The variables will allow something to apply to multiple fields. To use a macro, you will need to insert it into a workflow. If you have the macro open, you can do this by right clicking on the canvas and selecting Insert and then Macro (at the bottom of the list). Once you insert the macro into your workflow, you should see input and output anchors.