Please refer to the manual regarding Expression Manager tailoring and piping.
manual.limesurvey.org/Expression_Manager#Tailoring.2FPiping
manual.limesurvey.org/Expression_Manager..._.7BINSERTANS:xxx.7D
manual.limesurvey.org/Expression_Manager#Tailoring.2FPiping
manual.limesurvey.org/Expression_Manager..._.7BINSERTANS:xxx.7D