Hi @Anonymous ,
Do you want to display multiple records and make them editable in one screen?
I suggest you try gallery control and customize it.
Please note you could only update new records to collection, you could not modify an existing record of a collection.
I've made a similar test for your reference:
1)create a collection:
ClearCollect(a,{id:1,field1:"",field2:"",sum:""})
2)insert a blank gallery and customize it.
Set the gallery's Items: a
click the pen icon inside the gallery and then insert 3 labels, two textinput.
Set textinput1's Default: ThisItem.field1
Set textinput2's Default: ThisItem.field2
Set label1's Text："field1:"
Set label2's Text："field2:"
Set label3's Text： "sum:"&Value(TextInput1.Text)+Value(TextInput2.Text)
Set the arrow button's OnSelect:
Collect(a,{field1:TextInput1.Text,field2:TextInput2.Text});Reset(TextInput1);Reset(TextInput2)
3)insert 4 labels below the gallery
Set label4's Text："field1sum:"
Set label5's Text：Sum(a,field1)
Set label6's Text："field2sum:"
Set label7's Text：Sum(a,field2)
Then you could enter data in the gallery and click the arrow button your collection will update, the sum label will diaplay sum value.
