Display status ID having alias A and values 0, 1, 2 to display Success, Warning and Error.

${A == 0 ? 'Success' : A == 1 ? 'Warning' : 'Error'}

Add two numeric fields A and B.

${A + B}

Calculate percentage A from A and B.

${A / (A+B)}

Convert from A which is in KB to GB.

${A / (1024 * 1024)}

Calculate duration by subtracting values of date fields

${G.time - F.time}