Arguments

ename  (classic entity name) object or entity ename to query for the given property
property  (string) the name of the property to test; property name is always case-insensitive
value  (any Lisp value) the new value to be applied

Return

T if successful, NIL otherwise

Example

(setpropertyvalue  (entlast)  "Color"  "ByLayer")
(setpropertyvalue  (entlast)  "Color~Native"  "ByLayer")

(setpropertyvalue  (entlast)  "Color"  "5")
(setpropertyvalue  (entlast)  "Color~Native"  "5")

(setpropertyvalue  (entlast)  "Color"  "28,227,188")
(setpropertyvalue  (entlast)  "Color~Native"  "28,227,188")

Hint

the specified "ident" can be used to uniquely specify the property, as same-named properties can exist in multiple contexts;
the ident always uses the format "Name~Context"

Remarks

applying a property to an object or entity, where the property is not valid for, will trigger a Lisp error
(see (ispropertyvalid) function)

applying a value for a read-only property will trigger a Lisp error;
(see (ispropertyreadonly) function)

when in doubt, use (vl-catch-all-apply ...) error catcher