Invisible : NOT ($$IsSales:#VTYPMainType) is Not Working

Want to add Extra detail Lines in VoucherType Master,
EXTRA LINE SHOULD BE VISIABLE ONLY FOR SALES VOUCHERTYPE below is the code;

[#Part: VTYP BehaviourMain]
Add: Bottom Lines: At End: VB GSTDetails, VB ExtraDetails
Invisible : NOT ($$IsSales:#VTYPMainType)

Note : VTYPMainType is a field in VoucherType Master

Not Working, Help to rectify

 

use below code

Code:

[#Part: VTYP BehaviourMain]
option:MyPart:($$IsBelongsTo:$$GroupSales)

[!Part:MyPart]
Add: Bottom Lines: At End: VB GSTDetails, VB ExtraDetails

 

No, This Not Working, To Work have to use only this "NOT ($$IsSales:#VTYPMainType)" condition.

 

[#Part: VTYP BehaviourMain]

Add:Option:MyVTYP BehaviourMain:$$IsSales:$Parent

[!Part : MyVTYP BehaviourMain]
Add: Bottom Lines: At End: VB GSTDetails, VB ExtraDetails

 

Sir, this working. Thanks