>>is it possible to combine multiple functions in one expression... If I have a key parameter defined in Current accounts like "Interp(2015; 100; 2019; 120)", can I somehow combine it with GrowthAs function after 2019?
If(year < 2020,
Interp(2015, 100, 2019, 120),
GrowthAs(Key\GDP)
)
Or rewritten for your number formatting (with semi colons as separators):
If(year < 2020;
Interp(2015; 100; 2019; 120);
GrowthAs(Key\GDP)
)
One thing to note: if you edit the functions in the Builder window you can write the equation across multiple lines (making them easier to read). Once you submit them, they will look like this in the main data entry table...
If(year < 2020, ~ Interp(2015, 100, 2019, 120),~ GrowthAs(Key\GDP)~)
Best of luck!
Charlie