section's select change when CUSTOM intall type

InstType "type1"
InstType "type2"
InstType "type3"

section "essential"
sectionIn RO
,,,
sectionend

section "sec1"
sectionIn 1 2 3
,,,
secntionend

section "sec2"
sectionIn 2 3
,,,
secntionend

section "sec3"
sectionIn 1
,,,
secntionend

section "sec4"
sectionIn 1 2
,,,
secntionend

================================

"essential" section's selection change to empty when I select other components in components page.

what is problem in this code?

Is there any way to include sectionin to custom install?
(like InstType "CUSTOM")

If you want "essential" to stay checked for all InstTypes you have to include it in all the InstTypes. Then it should stay checked for Custom.

SectionIn 1 2 3 RO