Arguments

ename  the entity to query, as normal entity or as VLA object name

propertyName  name (string) of a property supported by the specific BIM Element type, as the entity is classified

categoryId  optional BIM property category ID, can be omitted (bcBimCategoryStandard is used then); see Category Constants
---or---
categoryName  optional BIM category name as string (can be an empty string for bcBimCategoryStandard), see Category Constants

Return

T if the property was removed; NIL in case of an error;
(T is also returned, if there was no such property present; hence, the T result indicates that there is no such property at the entity anymore)

Example

(bim:set-bimtype ent "MyProperty")  T
(bim:delete-property ent "MyProperty")  T
(bim:delete-property ent "MyPropertyX")  T

Remarks

see (bim::set-property)
all property names are always case-sensitive !