Expression evaluation error: a!submitUploadedFiles() cannot be evaluated in this environment.

Question

I'm getting this error in my application 
 
 I call the interface with the upload field in the forms and at one of the primary buttons i call the function a!submitUploadedFiles(). " at function a!buttonWidget". 
 
 I cant understand what can i do for this to work. Already checked the version of the buttons and forms. It's all up to date. 
 
 Can some help me ?

Mike Schmitt · Accepted Answer

nunof466265 said: Appian could make it to the saveInto too 
 I've been asking for this feature for years. You should go and upvote (and comment on) my Old Feature Request Thread , so more people will see it. 
 The answer to your original question is: a!submitUploadedFiles() (sadly) can not be used in a process task (task or start form) at all. You'll need a different work-around.

Shubham Aware · Answer

I tried to replicate your requirement, have a look at it(v25.3). a!localVariables(
 local!document,
 local!documentSize,

 a!formLayout(
 contents: {
 a!fileUploadField(
 label: "Upload Document",
 target: {},
 /*Replace this with you target folder*/
 value: local!document,
 saveInto: {
 local!document,
 /* Handle list of documents */
 a!save(
 local!documentSize,
 if(
 or(isnull(local!document), length(local!document) = 0),
 null,
 document(local!document[1], "size") /* Get first document */
 )
 )
 },
 maxSelections: 1 /* Limit to single file */
 ),

 /* Display the captured size */
 a!textField(
 label: "Document Size (bytes)",
 value: local!documentSize,
 readOnly: true
 )
 },

 buttons: a!buttonLayout(
 primaryButtons: {
 a!buttonWidget(
 label: "Submit",
 submit: true,
 saveInto: {
 /* Your other save logic here */
 }
 )
 }
 )
 )
)

Mike Schmitt · Answer

Shubham Aware said: 25.3 improved the file upload handling to make document properties available immediately in saveInto. 
 checking on this now - if they did that it would be amazing, and it makes me wonder why they didn't announce it (I do see there's an exciting new change in the Release Notes that I didn't notice before). 
 Edit: is the real update actually in the document() function then? In that it now allows access to properties of a just-uploaded file... Update: yup, it works as they promised! ...

Harsha Sharma · Answer

Here is a similar thread for your reference!

Shubham Aware · Answer

No, Actually you are currently on 25.1 and 25.3 improved the file upload handling to make document properties available immediately in saveInto.

Expression evaluation error: a!submitUploadedFiles() cannot be evaluated in this environment.

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