Update value of a local variable to new values inside a foreach loop

Question

a!localVariables( local!principalAmount:ri!loanAmount, local!totalMonths: ri!tenure * 12, local!interestForOneMonth: round(ri!interest / 12, 2), local!interest: ( local!interestForOneMonth * local!remainingAmount, ) / 100, local!remainingAmount:local!principalAmount-local!interest,   a!forEach( items: enumerate(local!totalMonths) + 1, expression: {   local!interest, local!principalAmount, local!remainingAmount,
a!save(local!remainingAmount,local!principalAmount-local!interest,), a!save(local!principalAmount, local!remainingAmount), } ), )
For each iteration of the for loop i want to update the value of local!principalAmount and local!remainingAmount as shown above. Kindly let me know how we do this in Appian.

harshitb6843 · Answer

You cannot change the values of a variable in a rule once assigned. Also, a!save() only works on human interactions/events and hence it won't work.
You can just create a new dictionary, or array and just assign it to a new variable and consume it. Or directly consume it without assigning it.

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