Unable to add rows dynamically using records

Question

Hi , Can anyone help me with this please!. Thank you for the help in advance. 
 
 local!pdf , 
 ri!upload: recordType!ABC(), 
 . 
 .... 
 ..... 
 shadeAlternateRows: true, addRowLink:a!dynamicLink( label: "Add", saveInto: { a!save( local!pdf, append(local!pdf, ri!upload) ) } ) 
 
 I am trying to add a new row , but maybe i am using ri!upload as value i am unable to get the desired output , the interface iis showing the same uploaded images every time i click on add new image link.

Mathieu Drouin · Answer

That's normal since you are saving multiple files in the same variable (ri!upload). 
 Here is an example that might help understand 
 a!localVariables(
 local!pdfs,
 a!gridLayout(
 headerCells: { a!gridLayoutHeaderCell(label: "File") },
 rows: a!forEach(
 items: local!pdfs,
 expression: a!gridRowLayout(
 contents: {
 a!fileUploadField(
 value: local!pdfs[fv!index].fileId,
 saveInto: local!pdfs[fv!index].fileId,
 maxSelections: 1
 )
 }
 )
 ),
 addRowLink: a!dynamicLink(
 label: "Add new row",
 saveInto: {
 a!save(
 local!pdfs,
 append(local!pdfs, a!map(fileId: null))
 )
 }
 )
 )
)